ATLAS

The ATLAS experiment at the Large Hadron Collider (LHC) at CERN, Geneva, is a multi-purpose experiment for particle physics, run by an international collaboration of 3000 physicists from 182 labs and universities representing 38 countries world-wide.

ATLAS started taking data in 2009, and will continue to do so till 2035. The experiment has discovered in 2012 the Higgs boson which provides a mass to all the elementary particles, and since then is scrutinizing its properties. The collaboration is also looking for new particles beyond the current theoretical framework, that could for instance explain the dark matter in the universe.

The ATLAS team at CPPM gathers about 45 physicists, engineers, PhD students and post-doctoral fellows. The team has been a member of the ATLAS collaboration since its inception in 1994.

We took part in the design, construction, testing and implementation of several elements of the ATLAS detector: the pixel detector (front-end electronics and mechanics, assembly, cooling), the electromagnetic calorimeter (project manager for the end-caps),the triggering system (high level architecture).

Building on this expertise, we are deeply involved in the performance studies including the identification of jets from /bottom/ quarks and of electrons. Our physics program in Run 2 follows two axes exploiting these signatures: new physics searches, in particular supersymmetry, and the study of the properties of Higgs boson and notably its coupling to the /top/ quark.

Ahead of Run 3 (and beyond), the team contributes to the upgrade program of the electronics for the electromagnetic calorimeter trigger. The team is also actively involved in the pixel R&D (electronics, mechanics, simulations) for the new ITK tracker for the high-luminosity phase of LHC.

Internal view of the electromagnetic calorimeter detector of ATLAS - Credit Coll. ATLAS, Cern
View of a ladder of the internal pixel detector of ATLAS - Credit Coll. ATLAS, Cern

Researchers and Research professors

Engineers and Technicians

PhD students

Post-doctoral fellows

PhD started in 2023
Subject: Probing the Higgs boson pair production through Vector Boson Fusion at the LHC in the ATLAS experiment
Fundings: Bourse AMU
PhD director : Arnaud Duperrin
Co-supervisor: Thomas Strebler
Subject: Recherche de résonances de basse masse avec le détecteur ATLAS au Run 3 du LHC
PhD director : Lorenzo Feligioni
Co-supervisor: Steve Muanza
Subject: Search for doubly resonant beyond the Standard Model process with one Higgs boson and one scalar resonance in the final state in the bbˉγγ b \bar{b} \gamma \gamma channel in the ATLAS experiment at the LHC
Fundings: Bourse AMU
PhD director : Emmanuel Monnier
Subject: Développement d'algorithmes d'intelligence artificielle embarqué dans des cartes électroniques à base d'FPGA pour le système de lecture et de déclenchement du calorimètre à argon liquide ATLAS
PhD director : Emmanuel Monnier
Co-supervisor: Georges Aad
PhD started in 2022
Subject: Conception, design et test d'une puce de lecture avec capteur intégré, pour la physique des hautes énergies
Fundings: CNRS - IN2P3
PhD director : Marlon Barbero
PhD started in 2021
Subject: Preparation to the Higgs self-coupling measurement using the HHbbγγ HH \rightarrow bb\gamma\gamma channel.
Fundings: Contrat doctoral AMU
PhD director : Arnaud Duperrin
Co-supervisor: Elisabeth Petit
Subject: Contrôle, fonctionnement, démarrage et performance de la mise à niveau Ph-1 du calorimètre LAr de l'électronique du détecteur ATLAS
Fundings: CERN
PhD director : Emmanuel Monnier
Co-supervisors: George Aad , Luis Hervas
PhD started in 2018
Subject: Studies of the Higgs boson properties with the ATLAS detector at LHC
Fundings: CSC + SJTU (Shanghai) + Fcppl
PhD director : Emmanuel Monnier
Co-supervisors: Jun GUO , Haijun YANG
See old PhDs (69)

Publications ATLAS

Articles

2024: 28 articles

  • Deep generative models for fast photon shower simulation in ATLAS, G. Aad et al. , ATLAS Collaboration, Comput. Softw. Big Sci. 8 (2024) 7
  • Search for top-philic heavy resonances in pppp collisions at s=13\sqrt{s}=13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 84 (2024) 157
  • Observation of WZγWZ\gamma production in pppp collisions at s=13\sqrt{s}=13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. Lett 132 (2024) 021802
  • Search for non-resonant production of semi-visible jets using Run 2 data in ATLAS, G. Aad et al. , ATLAS Collaboration, Phys. Lett. B 848 (2024) 138324
  • Measurement of the HγγH \to \gamma \gamma and HZZ4H \to ZZ^* \to 4 \ell cross-sections in pppp collisions at s=13.6\sqrt{s}=13.6 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 84 (2024) 78
  • Search for pair production of squarks or gluinos decaying via sleptons or weak bosons in final states with two same-sign or three leptons with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 02 (2024) 107
  • Search for new phenomena in two-body invariant mass distributions using unsupervised machine learning for anomaly detection at s=13\sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. Lett 132 (2024) 081801
  • Search for quantum black hole production in lepton+jet final states using proton-proton collisions at s\sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. D 109 (2024) 032010
  • Performance and calibration of quark/gluon-jet taggers using 140 fb1^{-1} of pppp collisions at s=13\sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Chin. Phys. C 48 (2024) 023001
  • Observation of WγγW\gamma\gamma triboson production in proton-proton collisions at s=13\sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Lett. B 848 (2024) 138400
  • Measurement of the ttˉt\bar{t} cross section and its ratio to the ZZ production cross section using pppp collisions at s=13.6\sqrt{s} = 13.6 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Lett. B 848 (2024) 138376
  • Software Performance of the ATLAS Track Reconstruction for LHC Run 3, G. Aad et al. , ATLAS Collaboration, Comput. Softw. Big Sci. 8 (2024) 9
  • Measurement of the ttˉt\bar{t} cross section and its ratio to the ZZ production cross section using pppp collisions at s=13.6\sqrt{s} = 13.6 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Lett. B 848 (2024) 138376
  • Differential cross-section measurements of the production of four charged leptons in association with two jets using the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 01 (2024) 004
  • Measurement of the centrality dependence of the dijet yield in pp +Pb collisions at sNN\sqrt{s_{_\text{NN} }} = 8.16 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. Lett 132 (2024) 102301
  • Search for the ZγZ\gamma decay mode of new high-mass resonances in pppp collisions at s=13\sqrt{s}=13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Lett. B 848 (2024) 138394
  • Electron and photon energy calibration with the ATLAS detector using LHC Run 2 data, G. Aad et al. , ATLAS Collaboration, J. Instrum 19 (2024) P02009
  • A precise measurement of the Z-boson double-differential transverse momentum and rapidity distributions in the full phase space of the decay leptons with the ATLAS experiment at s\sqrt s = 8 TeV, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 84 (2024) 315
  • Measurement of the production cross-section of J/ψJ/\psi and ψ(2\psi(2 S)) mesons in pppp collisions at s=13\sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 84 (2024) 169
  • Search for non-resonant Higgs boson pair production in the 2b+2+ETmiss2b + 2\ell + E_\mathrm{T}^\mathrm{miss} final state in pppp collisions at s=13TeV\sqrt{s} = 13\mathrm{TeV} with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 02 (2024) 037
  • Study of ZllγZ \to ll\gamma decays at s \sqrt s~ = 8 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 84 (2024) 195
  • Studies of new Higgs boson interactions through nonresonant HHHH production in the bbˉγγb\bar{b}\gamma\gamma final state in pppp collisions at s=13\sqrt{s}=13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 01 (2024) 066
  • Search for Resonant Production of Dark Quarks in the Dijet Final State with the ATLAS Detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 02 (2024) 128
  • Search for a CP-odd Higgs boson decaying into a heavy CP-even Higgs boson and a ZZ boson in the +ttˉ\ell^+\ell^- t\bar{t} and ννˉbbˉ\nu\bar{\nu}b\bar{b} final states using 140 fb1^{-1} of data collected with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 02 (2024) 197
  • Measurement and interpretation of same-sign WW boson pair production in association with two jets in pppp collisions at s=13\sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 04 (2024) 026
  • Search for the decay of the Higgs boson to a ZZ boson and a light pseudoscalar particle decaying to two photons, G. Aad et al. , ATLAS Collaboration, Phys. Lett. B 850 (2024) 138536
  • Study of high-momentum Higgs boson production in association with a vector boson in the qqbbqqbb final state with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. Lett 132 (2024) 131802
  • Search for new phenomena with top-quark pairs and large missing transverse momentum using 140 fb1\mathrm{fb}^{-1} of pppp collision data at s=13\sqrt{s}=13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 03 (2024) 139

2023: 128 articles

  • Observation of electroweak production of two jets and a Z-boson pair, G. Aad et al. , ATLAS Collaboration, Nat. Phys 19 (2023) 237-253
  • Search for the charged-lepton-flavor-violating decay ZeμZ\rightarrow e\mu in pppp collisions at s=13\sqrt{s}=13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. D 108 (2023) 032015
  • Search for heavy neutral leptons in decays of WW bosons using a dilepton displaced vertex in s=13\sqrt{s}=13 TeV pppp collisions with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. Lett 131 (2023) 061803
  • Measurement of cross-sections for production of a ZZ boson in association with a flavor-inclusive or doubly bb -tagged large-radius jet in proton-proton collisions at s=13 \sqrt{s} = 13~ TeV with the ATLAS experiment, G. Aad et al. , ATLAS Collaboration, Phys. Rev. D 108 (2023) 012022
  • Searches for new phenomena in events with two leptons, jets, and missing transverse momentum in 139 fb1139~\text{fb}^{-1} of s=13 \sqrt{s}=13~ TeV pppp collisions with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 83 (2023) 515
  • Observation of the γγττ\gamma \gamma \rightarrow \tau \tau Process in pb+Pbpb + Pb Collisions and Constraints on the τ\tau -Lepton Anomalous Magnetic Moment with the ATLAS Detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. Lett 131 (2023) 151802
  • Measurement of the nuclear modification factor of bb -jets in 5.02 TeV Pb+Pb collisions with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 83 (2023) 438
  • Correlations between flow and transverse momentum in Xe+XeXe + Xe and Pb+PbPb + Pb collisions at the LHC with the ATLAS detector: A probe of the heavy-ion initial state and nuclear deformation, G. Aad et al. , ATLAS Collaboration, Phys. Rev. C 107 (2023) 054910
  • Measurements of the suppression and correlations of dijets in Pb+Pb collisions at sNN\sqrt{s_{_\text{NN} }} = 5.02 TeV, G. Aad et al. , ATLAS Collaboration, Phys. Rev. C 107 (2023) 054908
  • Cross-section measurements for the production of a ZZ boson in association with high-transverse-momentum jets in pppp collisions at s=13\sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2306 (2023) 080
  • Search for flavour-changing neutral-current couplings between the top quark and the photon with the ATLAS detector at s=13\sqrt{s} = 13 TeV, G. Aad et al. , ATLAS Collaboration, Phys. Lett. B 842 (2023) 137379
  • Production of Υ(nS)\Upsilon(nS) mesons in Pb+Pb and pppp collisions at 5.02 TeV, G. Aad et al. , ATLAS Collaboration, Phys. Rev. C 107 (2023) 054912
  • Differential tt t\overline{t} cross-section measurements using boosted top quarks in the all-hadronic final state with 139 fb1^{-1} of ATLAS data, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2304 (2023) 080
  • Search for heavy, long-lived, charged particles with large ionisation energy loss in pppp collisions at s=13 TeV\sqrt{s} = 13~\text{TeV} using the ATLAS experiment and the full Run 2 dataset, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2306 (2023) 158
  • Combination of inclusive top-quark pair production cross-section measurements using ATLAS and CMS data at s=7\sqrt{s}= 7 and 8 TeV, G. Aad et al. , ATLAS Collaboration, CMS Collaboration, J. High Energy Phys. 2307 (2023) 213
  • Strong Constraints on Jet Quenching in Centrality-Dependent p+Pbp+Pb Collisions at 5.02 TeV from ATLAS, G. Aad et al. , ATLAS Collaboration, Phys. Rev. Lett 131 (2023) 072301
  • Search for new phenomena in final states with photons, jets and missing transverse momentum in pp collisions at s \sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2307 (2023) 021
  • Search for light long-lived neutral particles that decay to collimated pairs of leptons or light hadrons in pppp collisions at s=13\sqrt{s}=13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2306 (2023) 153
  • Measurement of muon pairs produced via γγ\gamma \gamma scattering in nonultraperipheral Pb+PbPb+Pb collisions at s\sqrt{s} 5.02 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. C 107 (2023) 054907
  • Measurements of W+WW^{+}W^{-} production in decay topologies inspired by searches for electroweak supersymmetry, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 83 (2023) 718
  • Measurements of Higgs boson production by gluon-gluon fusion and vector-boson fusion using HWWeνμνH\rightarrow W W^* \rightarrow e\nu \mu\nu decays in pppp collisions at s=13\sqrt{s}=13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. D 108 (2023) 032005
  • Measurement of the properties of Higgs boson production at s=13\sqrt{s} = 13 TeV in the HγγH\to\gamma\gamma channel using 139139 fb1^{-1} of pppp collision data with the ATLAS experiment, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2307 (2023) 088
  • Measurement of the Higgs boson mass in the HZZ4H \rightarrow ZZ^* \rightarrow 4\ell decay channel using 139 fb1^{-1} of s=13\sqrt{s}=13 TeV pppp collisions recorded by the ATLAS detector at the LHC, G. Aad et al. , ATLAS Collaboration, Phys. Lett. B 843 (2023) 137880
  • Search for heavy resonances decaying into a ZZ or WW boson and a Higgs boson in final states with leptons and bb -jets in 139139 fb1^{-1} of pppp collisions at s=13\sqrt{s}=13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2306 (2023) 016
  • Measurement of the ttˉt \bar{t} production cross-section in pppp collisions at s=5.02\sqrt{s}=5.02 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2306 (2023) 138
  • Search for resonant WZνWZ \rightarrow \ell\nu \ell^{\prime}\ell^{\prime} production in proton-proton collisions at s=13\mathbf{\sqrt{s} = 13} TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 83 (2023) 633
  • Measurement of the total and differential Higgs boson production cross-sections at s=13\sqrt{s} = 13 TeV with the ATLAS detector by combining the HZZ4H \rightarrow ZZ^* \rightarrow 4\ell and HγγH \rightarrow \gamma \gamma decay channels, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2305 (2023) 028
  • Measurement of the total cross section and ρ\rho -parameter from elastic scattering in pppp collisions at s=13\sqrt{s}=13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 83 (2023) 441
  • Exclusive dielectron production in ultraperipheral Pb+Pb collisions at sNN \sqrt{s_{\textrm{NN} }} = 5.02 TeV with ATLAS, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2306 (2023) 182
  • Study of the CP property of the Higgs boson to electroweak boson coupling in the VBF HγγH\to\gamma\gamma channel with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. Lett 131 (2023) 061802
  • Searches for exclusive Higgs and ZZ boson decays into a vector quarkonium state and a photon using 139139 fb1^{-1} of ATLAS s=13\sqrt{s}=13 TeV proton-proton collision data, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 83 (2023) 781
  • Search for flavour-changing neutral current interactions of the top quark and the Higgs boson in events with a pair of τ-leptons in pp collisions at s \sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2306 (2023) 155
  • Evidence for the charge asymmetry in ppttˉpp \rightarrow t\bar{t} production at s=13\sqrt{s}= 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2308 (2023) 077
  • Measurement of electroweak Z(ννˉ)γjjZ(\nu\bar{\nu})\gamma jj production and limits on anomalous quartic gauge couplings in pppp collisions at s=13\sqrt{s}=13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2306 (2023) 082
  • Measurement of the top-quark mass using a leptonic invariant mass in pppp collisions at s=13 TeV\sqrt{s}=13~\textrm{TeV} with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2306 (2023) 019
  • Search for displaced photons produced in exotic decays of the Higgs boson using 13 TeV pppp collisions with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. D 108 (2023) 032016
  • Measurements of observables sensitive to colour reconnection in ttˉt\bar{t} events with the ATLAS detector at s=13\sqrt{s}=13 TeV, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 83 (2023) 518
  • Measurement of single top-quark production in the s-channel in proton–proton collisions at s \sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2306 (2023) 191
  • Search for resonant and non-resonant Higgs boson pair production in the bbˉτ+τb\bar b\tau^+\tau^- decay channel using 13 TeV pppp collision data from the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2307 (2023) 040
  • Search for direct pair production of sleptons and charginos decaying to two leptons and neutralinos with mass splittings near the WW -boson mass in s=13\sqrt{s}=13 TeV pppp collisions with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2306 (2023) 031
  • A search for new resonances in multiple final states with a high transverse momentum ZZ boson in s=13\sqrt{s}=13 TeV pppp collisions with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2306 (2023) 036
  • Measurement of the polarisation of WW bosons produced in top-quark decays using dilepton events at s=13\sqrt{s} = 13 TeV with the ATLAS experiment, G. Aad et al. , ATLAS Collaboration, Phys. Lett. B 843 (2023) 137829
  • Search for pair-produced scalar and vector leptoquarks decaying into third-generation quarks and first- or second-generation leptons in pp collisions with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2306 (2023) 188
  • Search for Higgs boson pair production in association with a vector boson in pppp collisions at s=\sqrt{s}= 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 83 (2023) 519
  • Search for pair-production of vector-like quarks in pppp collision events at s=13\sqrt{s}=13 TeV with at least one leptonically decaying ZZ boson and a third-generation quark with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Lett. B 843 (2023) 138019
  • Search for ttˉH/Attˉttˉt\bar tH/A \rightarrow t\bar tt\bar t production in the multilepton final state in proton-proton collisions at s=13\sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2307 (2023) 203
  • Constraining the Higgs boson self-coupling from single- and double-Higgs production with the ATLAS detector using pppp collisions at s=13\sqrt{s}=13 TeV, G. Aad et al. , ATLAS Collaboration, Phys. Lett. B 843 (2023) 137745
  • A search for heavy Higgs bosons decaying into vector bosons in same-sign two-lepton final states in pppp collisions at s=13\sqrt{s}=13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2307 (2023) 200
  • Search for boosted diphoton resonances in the 10 to 70 GeV mass range using 138 fb1^{-1} of 13 TeV pp collisions with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2307 (2023) 155
  • Constraints on spin-0 dark matter mediators and invisible Higgs decays using ATLAS 13 TeV pppp collision data with two top quarks and missing transverse momentum in the final state, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 83 (2023) 503
  • Search for dark matter produced in association with a dark Higgs boson decaying into W+^{+} W^{-} in the one-lepton final state at s \sqrt{s} = 13 TeV using 139 fb1^{-1} of pp collisions recorded with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2307 (2023) 116
  • Search for doubly charged Higgs boson production in multi-lepton final states using 139 fb1^{-1} of proton–proton collisions at s\sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 83 (2023) 605
  • Search for supersymmetry in final states with missing transverse momentum and three or more b-jets in 139 fb1^{-1} of proton–proton collisions at s=13\sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 83 (2023) 561
  • Search for new phenomena in multi-body invariant masses in events with at least one isolated lepton and two jets using s \sqrt{s} = 13 TeV proton–proton collision data collected by the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2307 (2023) 202
  • Observation of gauge boson joint-polarisation states in W±ZW^\pm Z production from pppp collisions at s=13\sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Lett. B 843 (2023) 137895
  • Measurement of substructure-dependent jet suppression in Pb+PbPb + Pb collisions at 5.02 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. C 107 (2023) 054909
  • Search for dark matter produced in association with a single top quark and an energetic WW boson in s=\sqrt{s}= 13 TeV pppp collisions with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 83 (2023) 603
  • ATLAS flavour-tagging algorithms for the LHC Run 2 pppp collision dataset, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 83 (2023) 681
  • Measurement of ZγγZ\gamma\gamma production in pppp collisions at s=13\sqrt{s}= 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 83 (2023) 539
  • Charged-hadron production in pppp , pp +Pb, Pb+Pb, and Xe+Xe collisions at sNN=5\sqrt{s_{_\text{NN} }}=5 TeV with the ATLAS detector at the LHC, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2307 (2023) 074
  • Tools for estimating fake/non-prompt lepton backgrounds with the ATLAS detector at the LHC, G. Aad et al. , ATLAS Collaboration, J. Instrum 18 (2023) T11004
  • Measurement of the inclusive ttˉt\bar{t} production cross section in the lepton+jets channel in pppp collisions at s\sqrt{s} = 7 TeV with the ATLAS detector using support vector machines, M. Aaboud et al. , ATLAS Collaboration, Phys. Rev. D 108 (2023) 032014
  • Measurement of exclusive pion pair production in proton–proton collisions at s=7TeV\sqrt{s}={7}\,\text {TeV} with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 83 (2023) 627
  • Search for pair-produced vector-like top and bottom partners in events with large missing transverse momentum in pp collisions with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 83 (2023) 719
  • Studies of the muon momentum calibration and performance of the ATLAS detector with pppp collisions at s\sqrt{s} =13 TeV, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 83 (2023) 686
  • Measurements of Zγ+Z\gamma+ jets differential cross sections in pppp collisions at s=13\sqrt{s}=13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2307 (2023) 072
  • Luminosity determination in pppp collisions at s=13\sqrt{s}=13 TeV using the ATLAS detector at the LHC, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 83 (2023) 982
  • Search for dark photons from Higgs boson decays via ZHZH production with a photon plus missing transverse momentum signature from pppp collisions at s\sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2307 (2023) 133
  • Measurement of the charge asymmetry in top-quark pair production in association with a photon with the ATLAS experiment, G. Aad et al. , ATLAS Collaboration, Phys. Lett. B 843 (2023) 137848
  • Search for nonresonant pair production of Higgs bosons in the bbˉbbˉb\bar{b}b\bar{b} final state in pppp collisions at s=13\sqrt{s}= 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. D 108 (2023) 052003
  • Search for a new scalar resonance in flavour-changing neutral-current top-quark decays tqXt \rightarrow qX (q=u,cq=u,c ), with XbbˉX \rightarrow b\bar{b} , in proton-proton collisions at s=13\sqrt{s}=13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2307 (2023) 199
  • Search for leptonic charge asymmetry in ttW t\overline{t}W production in final states with three leptons at s \sqrt{s} = 13 TeV, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2307 (2023) 033
  • Measurement of suppression of large-radius jets and its dependence on substructure in Pb+Pb collisions at sNN=5.02\sqrt{s_\mathrm{NN} } = 5.02 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. Lett 131 (2023) 172301
  • Measurements of differential cross sections of Higgs boson production through gluon fusion in the HWWeνμνH\to WW^{\ast}\to e\nu\mu\nu final state at s=13\sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 83 (2023) 774
  • Calibration of the light-flavour jet mistagging efficiency of the bb -tagging algorithms with ZZ +jets events using 139 fb1\mathrm{fb}^{-1} of ATLAS proton-proton collision data at s=13\sqrt{s} = 13 TeV, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 83 (2023) 728
  • Determination of the strong coupling constant from transverse energy-energy correlations in multijet events at s \sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2307 (2023) 085
  • Search for a new Z' gauge boson in 4μ4\mu events with the ATLAS experiment, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2307 (2023) 090
  • Search for exclusive Higgs and ZZ boson decays to ωγ\omega\gamma and Higgs boson decays to KγK^{*}\gamma with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Lett. B 847 (2023) 138292
  • Model-independent search for the presence of new physics in events including HγγH\rightarrow\gamma\gamma with s\sqrt{s} = 13 TeV pp data recorded by the ATLAS detector at the LHC, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2307 (2023) 176
  • Combination of searches for invisible decays of the Higgs boson using 139 fb1^{-1} of proton-proton collision data at s=13\sqrt{s} = 13 TeV collected with the ATLAS experiment, G. Aad et al. , ATLAS Collaboration, Phys. Lett. B 842 (2023) 137963
  • Search for flavor-changing neutral-current couplings between the top quark and the ZZ boson with LHC Run 2 proton-proton collisions at s=13\sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. D 108 (2023) 032019
  • Search for long-lived, massive particles in events with displaced vertices and multiple jets in pp collisions at s \sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2306 (2023) 200
  • Measurement of the production of a WW boson in association with a charmed hadron in pppp collisions at s=13TeV\sqrt{s} = 13\,\mathrm{TeV} with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. D 108 (2023) 032012
  • Inclusive-photon production and its dependence on photon isolation in pppp collisions at s=13\sqrt s=13 TeV using 139 fb1^{-1} of ATLAS data, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2307 (2023) 086
  • Observation of Single-Top-Quark Production in Association with a Photon Using the ATLAS Detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. Lett 131 (2023) 181901
  • Measurements of the suppression and correlations of dijets in Xe+Xe collisions at sNN\sqrt{s_{NN} } = 5.44 TeV, G. Aad et al. , ATLAS Collaboration, Phys. Rev. C 108 (2023) 024906
  • Searches for lepton-flavour-violating decays of the Higgs boson into eτe\tau and μτ\mu\tau in s=13\sqrt{s}=13 TeV pppp collisions with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2307 (2023) 166
  • Search for a light charged Higgs boson in tH±bt \rightarrow H^{\pm}b decays, with H±cbH^{\pm} \rightarrow cb , in the lepton+jets final state in proton-proton collisions at s=13\sqrt{s}=13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2309 (2023) 004
  • Search for pair production of third-generation leptoquarks decaying into a bottom quark and a τ\tau -lepton with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 83 (2023) 1075
  • Search for third-generation vector-like leptons in pppp collisions at s=13TeV\sqrt{s} = 13\,\text{TeV} with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2307 (2023) 118
  • Search for excited τ\tau -leptons and leptoquarks in the final state with τ\tau -leptons and jets in pp collisions at s=13\sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2306 (2023) 199
  • Comparison of inclusive and photon-tagged jet suppression in 5.02 TeV Pb+Pb collisions with ATLAS, G. Aad et al. , ATLAS Collaboration, Phys. Lett. B 846 (2023) 138154
  • Search for heavy long-lived multi-charged particles in the full LHC Run 2 pppp collision data at s\sqrt{s} = 13 TeV using the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Lett. B 847 (2023) 138316
  • Inclusive and differential cross-sections for dilepton ttˉt\bar{t} production measured in s=13\sqrt{s}=13\; TeV pppp collisions with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2307 (2023) 141
  • Observation of four-top-quark production in the multilepton final state with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 83 (2023) 496
  • Measurement of the Sensitivity of Two-Particle Correlations in pppp Collisions to the Presence of Hard Scatterings, G. Aad et al. , ATLAS Collaboration, Phys. Rev. Lett 131 (2023) 162301
  • New techniques for jet calibration with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 83 (2023) 761
  • Evidence of off-shell Higgs boson production from ZZZZ leptonic decay channels and constraints on its total width with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Lett. B 846 (2023) 138223
  • Integrated and differential fiducial cross-section measurements for the vector boson fusion production of the Higgs boson in the HWWeνμνH \to WW^* \to e\nu\mu\nu decay channel at 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. D 108 (2023) 072003
  • Observation of an Excess of Dicharmonium Events in the Four-Muon Final State with the ATLAS Detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. Lett 131 (2023) 151902
  • Search for heavy Majorana or Dirac neutrinos and right-handed W gauge bosons in final states with charged leptons and jets in pp collisions at s=13\sqrt{s}=13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 83 (2023) 1164
  • Search for an axion-like particle with forward proton scattering in association with photon pairs at ATLAS, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2307 (2023) 234
  • Search for high-mass WγW\gamma and ZγZ\gamma resonances using hadronic W/Z boson decays from 139 fb1^{-1} of pppp collisions at s=\sqrt{s}= 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2307 (2023) 125
  • Performance of the reconstruction of large impact parameter tracks in the inner detector of ATLAS, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 83 (2023) 1081
  • Search in diphoton and dielectron final states for displaced production of Higgs or ZZ bosons with the ATLAS detector in s=13\sqrt{s} = 13 TeV pppp collisions, G. Aad et al. , ATLAS Collaboration, Phys. Rev. D 108 (2023) 012012
  • Search for a new pseudoscalar decaying into a pair of muons in events with a top-quark pair at s=13\sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. D 108 (2023) 092007
  • Search for pairs of muons with small displacements in pppp collisions at s=13\sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Lett. B 846 (2023) 138172
  • Search for single production of vector-like TT quarks decaying into HtHt or ZtZt in pppp collisions at s=13\sqrt{s}=13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2308 (2023) 153
  • Search for direct production of winos and higgsinos in events with two same-charge leptons or three leptons in pppp collision data at s=13\sqrt{s}=13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2311 (2023) 150
  • Search for periodic signals in the dielectron and diphoton invariant mass spectra using 139 fb1^{-1} of pp collisions at s \sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2310 (2023) 079
  • Search for dark matter produced in association with a Higgs boson decaying to tau leptons at s=13\sqrt{s}=13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2309 (2023) 189
  • Search for Majorana neutrinos in same-sign WWWW scattering events from pppp collisions at s=13\sqrt{s}=13 TeV, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 83 (2023) 824
  • Measurements of multijet event isotropies using optimal transport with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2310 (2023) 060
  • Search for leptoquarks decaying into the bτ\tau final state in pppp collisions at s=13\sqrt{s}=13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2310 (2023) 001
  • Measurement of the cross-sections of the electroweak and total production of a ZγZ \gamma pair in association with two jets in pppp collisions at s\sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Lett. B 846 (2023) 138222
  • Anomaly detection search for new resonances decaying into a Higgs boson and a generic new particle XX in hadronic final states using s=13\sqrt{s} = 13 TeV pppp collisions with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. D 108 (2023) 052009
  • Search for dark photons in rare ZZ boson decays with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. Lett 131 (2023) 251801
  • Search for a new heavy scalar particle decaying into a Higgs boson and a new scalar singlet in final states with one or two light leptons and a pair of τ\tau -leptons with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2310 (2023) 009
  • Pursuit of paired dijet resonances in the Run 2 dataset with ATLAS, G. Aad et al. , ATLAS Collaboration, Phys. Rev. D 108 (2023) 112005
  • Search for heavy Higgs bosons with flavour-violating couplings in multi-lepton plus b-jets final states in pp collisions at 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2312 (2023) 081
  • Measurement of the Bs0μμB_s^0 \to \mu\mu Effective Lifetime with the ATLAS Detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2309 (2023) 199
  • Combined measurement of the Higgs boson mass from the HγγH\to\gamma\gamma and HZZ4H\to ZZ^{*} \to 4\ell decay channels with the ATLAS detector using s\sqrt{s} = 7, 8 and 13 TeV pppp collision data, G. Aad et al. , ATLAS Collaboration, Phys. Rev. Lett 131 (2023) 251802
  • Search for magnetic monopoles and stable particles with high electric charges in s \sqrt{s} = 13 TeV pp collisions with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2311 (2023) 112
  • Measurement of the Higgs boson mass with HγγH \rightarrow \gamma\gamma decays in 140 fb1^{-1} of s=13\sqrt{s}=13 TeV pppp collisions with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Lett. B 847 (2023) 138315
  • Search for vector-boson resonances decaying into a top quark and a bottom quark using pp collisions at s \sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2312 (2023) 073
  • Search for flavor-changing neutral tqHtqH interactions with HγγH\rightarrow \gamma\gamma in pppp collisions at s\sqrt{s} = 13 TeV using the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2312 (2023) 195
  • Evidence of pair production of longitudinally polarised vector bosons and study of CP properties in ZZ4ZZ \to 4\ell events with the ATLAS detector at s=13\sqrt{s} = 13 TeV, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2312 (2023) 107
  • Search for direct production of electroweakinos in final states with one lepton, jets and missing transverse momentum in pppp collisions at s=13\sqrt{s}=13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2312 (2023) 167

2022: 39 articles

  • Emulating the impact of additional proton–proton interactions in the ATLAS simulation by presampling sets of inelastic Monte Carlo events, G. Aad et al. , ATLAS Collaboration, Comput. Softw. Big Sci. 6 (2022) 3
  • Performance of the ATLAS Level-1 topological trigger in Run 2, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 82 (2022) 7
  • Search for lepton-flavor-violation in ZZ -boson decays with τ\tau -leptons with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. Lett 127 (2022) 271801
  • Search for new phenomena in three- or four-lepton events in pppp collisions at s=13\sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Lett. B 824 (2022) 136832
  • The ATLAS Inner Detector Trigger performance in pppp collisions at 13 TeV during LHC Run 2, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 82 (2022) 206
  • Search for heavy particles in the bb -tagged dijet mass distribution with additional bb -tagged jets in proton-proton collisions at s\sqrt s = 13 TeV with the ATLAS experiment, G. Aad et al. , ATLAS Collaboration, Phys. Rev. D 105 (2022) 012001
  • Measurement of the energy response of the ATLAS calorimeter to charged pions from W±τ±(π±ντ)ντW^{\pm}\rightarrow\tau^{\pm}(\rightarrow\pi^{\pm}\nu_{\tau})\nu_{\tau} events in Run 2 data, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 82 (2022) 223
  • Measurement of the nuclear modification factor for muons from charm and bottom hadrons in Pb+Pb collisions at 5.02 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Lett. B 829 (2022) 137077
  • Search for exotic decays of the Higgs boson into bb \overline{b} and missing transverse momentum in pp collisions at s \sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2201 (2022) 063
  • Operation and performance of the ATLAS semiconductor tracker in LHC Run 2, G. Aad et al. , ATLAS Collaboration, J. Instrum 17 (2022) P01013
  • AtlFast3: the next generation of fast simulation in ATLAS, G. Aad et al. , ATLAS Collaboration, Comput. Softw. Big Sci. 6 (2022) 7
  • Measurement of the cc -jet mistagging efficiency in ttˉt\bar{t} events using pppp collision data at s=13\sqrt{s}=13 TeV collected with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 82 (2022) 95
  • Constraints on Higgs boson properties using WW(eνμν)jjWW^{*}(\rightarrow e\nu \mu \nu )jj production in 36.1fb136.1\,\mathrm{fb}^{-1} of s=13\sqrt{s}=13 TeV pp collisions with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 82 (2022) 622
  • Search for Higgs boson decays into a pair of pseudoscalar particles in the bbμμbb\mu\mu final state with the ATLAS detector in pppp collisions at s=13\sqrt{s}=13 TeV, G. Aad et al. , ATLAS Collaboration, Phys. Rev. D 105 (2022) 012006
  • Measurement of the energy asymmetry in ttˉjt\bar{t}j production at 13 TeV with the ATLAS experiment and interpretation in the SMEFT framework, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 82 (2022) 374
  • Search for Higgs bosons decaying into new spin-0 or spin-1 particles in four-lepton final states with the ATLAS detector with 139 fb1^{-1} of pppp collision data at s=13\sqrt{s}=13 TeV, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2203 (2022) 041
  • Measurement of Higgs boson decay into bb -quarks in associated production with a top-quark pair in pppp collisions at s=13\sqrt{s}=13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2206 (2022) 097
  • Measurements of azimuthal anisotropies of jet production in Pb+Pb collisions at sNN=\sqrt{s_{NN} } = 5.02 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. C 105 (2022) 064903
  • Search for associated production of a ZZ boson with an invisibly decaying Higgs boson or dark matter candidates at s=13\sqrt{s}=13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Lett. B 829 (2022) 137066
  • Constraints on Higgs boson production with large transverse momentum using HbbˉH\rightarrow b\bar{b} decays in the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. D 105 (2022) 092003
  • Search for flavour-changing neutral-current interactions of a top quark and a gluon in pppp collisions at s=13\sqrt{s}=13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 82 (2022) 334
  • A search for an unexpected asymmetry in the production of e+μe^+ \mu^- and eμ+e^- \mu^+ pairs in proton-proton collisions recorded by the ATLAS detector at s=13\sqrt s = 13 TeV, G. Aad et al. , ATLAS Collaboration, Phys. Lett. B (2022)
  • Modelling and computational improvements to the simulation of single vector-boson plus jet processes for the ATLAS experiment, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2208 (2022) 089
  • Determination of the parton distribution functions of the proton using diverse ATLAS data from pppp collisions at s=7\sqrt{s} = 7 , 8 and 13 TeV, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 82 (2022) 438
  • Search for Higgs boson pair production in the two bottom quarks plus two photons final state in pppp collisions at s=13\sqrt{s}=13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. D 106 (2022) 052001
  • Search for long-lived charginos based on a disappearing-track signature using 136 fb1^{-1} of pp collisions at s\sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 82 (2022) 606
  • Search for single production of a vector-like TT quark decaying into a Higgs boson and top quark with fully hadronic final states using the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. D 105 (2022) 092012
  • Measurements of Higgs boson production cross-sections in the Hτ+τH\rightarrow\tau^{+}\tau^{-} decay channel in pppp collisions at s=13TeV\sqrt{s}=13\,\text{TeV} with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2208 (2022) 175
  • Direct constraint on the Higgs-charm coupling from a search for Higgs boson decays into charm quarks with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 82 (2022) 717
  • Observation of WWWWWW production in pppp collisions at s=13\sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. Lett 129 (2022) 061803
  • Measurements of the Higgs boson inclusive and differential fiducial cross-sections in the diphoton decay channel with pppp collisions at s=13\sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2208 (2022) 027
  • Two-particle Bose–Einstein correlations in pp{ pp } collisions at s=13\mathbf {\sqrt{s} = 13} TeV measured with the ATLAS detector at the LHC, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 82 (2022) 608
  • Search for resonant pair production of Higgs bosons in the bbˉbbˉb\bar{b}b\bar{b} final state using pppp collisions at s\sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. D 105 (2022) 092002
  • Search for invisible Higgs-boson decays in events with vector-boson fusion signatures using 139 fb1^{-1} of proton-proton data recorded by the ATLAS experiment, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2208 (2022) 104
  • Measurements of differential cross-sections in top-quark pair events with a high transverse momentum top quark and limits on beyond the Standard Model contributions to top-quark pair production with the ATLAS detector at s \sqrt{s} = 13 TeV, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2206 (2022) 063
  • Measurements of jet observables sensitive to bb -quark fragmentation in ttˉt\bar{t} events at the LHC with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. D 106 (2022) 032008
  • Search for events with a pair of displaced vertices from long-lived neutral particles decaying into hadronic jets in the ATLAS muon spectrometer in pp collisions at s\sqrt s =13 TeV, G. Aad et al. , ATLAS Collaboration, Phys. Rev. D 106 (2022) 032005
  • Search for neutral long-lived particles in pppp collisions at s \sqrt{s} = 13 TeV that decay into displaced hadronic jets in the ATLAS calorimeter, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2206 (2022) 005
  • Study of Bc+J/ψDs+B_c^+\to J/\psi D_s^+ and Bc+J/ψDs+B_c^+\to J/\psi D_s^{*+} decays in pppp collisions at s=13\sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2208 (2022) 087

2021: 66 articles

  • Measurement of the jet mass in high transverse momentum Z(bb)γZ(\rightarrow b\overline{b})\gamma production at s=13\sqrt{s}= 13 TeV using the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Lett. B 812 (2021) 135991
  • Measurement of the relative Bc±/B±B^{\pm}_{c}/B^{\pm} production cross section with the ATLAS detector at s=8\sqrt{s}=8 TeV, M. Aaboud et al. , ATLAS Collaboration, Phys. Rev. D 104 (2021) 012010
  • Longitudinal flow decorrelations in Xe+Xe collisions at sNN=5.44\sqrt{s_{\mathrm{NN} }}=5.44 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. Lett 126 (2021) 122301
  • Measurement of the CPCP -violating phase ϕs\phi_s in Bs0J/ψϕB^0_s \to J/\psi\phi decays in ATLAS at 13 TeV, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 81 (2021) 342
  • Measurements of top-quark pair single- and double-differential cross-sections in the all-hadronic channel in pppp collisions at s=13\sqrt{s}=13 TeV using the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2101 (2021) 033
  • Differential cross-section measurements for the electroweak production of dijets in association with a ZZ boson in proton- proton collisions at ATLAS, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 81 (2021) 163
  • Measurement of single top-quark production in association with a W boson in the single-lepton channel at s=8TeV\sqrt{s} = 8\,\text {TeV} with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 81 (2021) 720
  • Jet energy scale and resolution measured in proton–proton collisions at s=13\sqrt{s}=13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 81 (2021) 689
  • Measurements of WHWH and ZHZH production in the HbbˉH \rightarrow b\bar{b} decay channel in pppp collisions at 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 81 (2021) 178
  • A search for the dimuon decay of the Standard Model Higgs boson with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Lett. B 812 (2021) 135980
  • Measurement of hadronic event shapes in multijet final states at s=13\sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2101 (2021) 188
  • Test of the universality of τ\tau and μ\mu lepton couplings in WW -boson decays with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Nat. Phys 17 (2021) 813-818
  • Measurement of the associated production of a Higgs boson decaying into bb -quarks with a vector boson at high transverse momentum in pppp collisions at s=13\sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Lett. B 816 (2021) 136204
  • Measurement of light-by-light scattering and search for axion-like particles with 2.2 nb1^{-1} of Pb+Pb data with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2103 (2021) 243
  • Search for type-III seesaw heavy leptons in dilepton final states in pppp collisions at s\sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 81 (2021) 218
  • Medium-induced modification of ZZ -tagged charged particle yields in Pb+Pb collisions at 5.02 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. Lett 126 (2021) 072301
  • Optimisation of large-radius jet reconstruction for the ATLAS detector in 13 TeV proton–proton collisions, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 81 (2021) 334
  • Search for heavy resonances decaying into a pair of Z bosons in the ++\ell ^+\ell ^-\ell '^+\ell '^- and +ννˉ\ell ^+\ell ^-\nu { {\bar{\nu } }} final states using 139 fb1\mathrm {fb}^{-1} of proton–proton collisions at s=13\sqrt{s} = 13\, TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 81 (2021) 332
  • Search for phenomena beyond the Standard Model in events with large bb -jet multiplicity using the ATLAS detector at the LHC, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 81 (2021) 11
  • Search for pair production of scalar leptoquarks decaying into first- or second-generation leptons and top quarks in proton-proton collisions at s=13\sqrt{s}=13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 81 (2021) 313
  • Observation of photon-induced W+WW^+W^- production in pppp collisions at s=13\sqrt{s}=13 TeV using the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Lett. B 816 (2021) 136190
  • Search for dark matter produced in association with a dark Higgs boson decaying into W±WW^\pm W^\mp or ZZZZ in fully hadronic final states from s=13\sqrt{s}=13 TeV pppp collisions recorded with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. Lett 126 (2021) 121802
  • Search for Higgs boson production in association with a high-energy photon via vector-boson fusion with decay into bottom quark pairs at s=13\sqrt{s}=13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2103 (2021) 268
  • Search for squarks and gluinos in final states with jets and missing transverse momentum using 139 fb1^{-1} of s\sqrt{s} =13 TeV pppp collision data with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2102 (2021) 143
  • Search for dark matter in association with an energetic photon in pp collisions at s\sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2102 (2021) 226
  • Search for a heavy Higgs boson decaying into a ZZ boson and another heavy Higgs boson in the bb\ell\ell bb and WW\ell \ell WW final states in pppp collisions at s=13\sqrt{s}=13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 81 (2021) 396
  • Search for displaced leptons in s=13\sqrt{s} = 13 TeV pppp collisions with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. Lett 127 (2021) 051802
  • Measurements of Higgs Bosons Decaying to Bottom Quarks from Vector Boson Fusion Production with the ATLAS Experiment at s=13\sqrt{s}=13 TeV, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 81 (2021) 537
  • Search for dark matter produced in association with a single top quark in s=13\sqrt{s}=13 TeV pppp collisions with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 81 (2021) 860
  • Search for trilepton resonances from chargino and neutralino pair production in s=13\sqrt{s} = 13 TeV pppp collisions with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. D 103 (2021) 112003
  • Exclusive dimuon production in ultraperipheral Pb+Pb collisions at sNN=5.02\sqrt{s_{\mathrm{NN} }} = 5.02 TeV with ATLAS, G. Aad et al. , ATLAS Collaboration, Phys. Rev. C 104 (2021) 024906
  • Muon reconstruction and identification efficiency in ATLAS using the full Run 2 pppp collision data set at s=13\sqrt{s}=13 TeV, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 81 (2021) 578
  • Search for new phenomena with top quark pairs in final states with one lepton, jets, and missing transverse momentum in pppp collisions at s\sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2104 (2021) 174
  • Search for squarks and gluinos in final states with one isolated lepton, jets, and missing transverse momentum at s=13\sqrt{s}=13 with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 81 (2021) 600
  • The ATLAS Fast TracKer system, G. Aad et al. , ATLAS Collaboration, J. Instrum 16 (2021) P07006
  • Determination of the parton distribution functions of the proton from ATLAS measurements of differential W±W^\pm and ZZ boson production in association with jets, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2107 (2021) 223
  • Two-particle azimuthal correlations in photonuclear ultraperipheral Pb+Pb collisions at 5.02 TeV with ATLAS, G. Aad et al. , ATLAS Collaboration, Phys. Rev. C 104 (2021) 014903
  • Search for pair production of third-generation scalar leptoquarks decaying into a top quark and a τ\tau -lepton in pppp collisions at s=13\sqrt{s}=13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2106 (2021) 179
  • Search for new phenomena in final states with bb -jets and missing transverse momentum in s=13\sqrt{s}=13 TeV pppp collisions with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2105 (2021) 093
  • Search for doubly and singly charged Higgs bosons decaying into vector bosons in multi-lepton final states with the ATLAS detector using proton-proton collisions at s=13\sqrt{s} = 13 TeV, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2106 (2021) 146
  • Search for new phenomena in events with two opposite-charge leptons, jets and missing transverse momentum in pppp collisions at s=13\sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2104 (2021) 165
  • Search for charged Higgs bosons decaying into a top quark and a bottom quark at s \sqrt{\mathrm{s} } = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2106 (2021) 145
  • Search for new phenomena in events with an energetic jet and missing transverse momentum in pppp collisions at s=13\sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. D 103 (2021) 112006
  • Performance of the ATLAS RPC detector and Level-1 muon barrel trigger at s=13\sqrt{s}=13 TeV, G. Aad et al. , ATLAS Collaboration, J. Instrum 16 (2021) P07029
  • Search for resonances decaying into photon pairs in 139 fb1^{-1} of pppp collisions at s=\sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Lett. B 822 (2021) 136651
  • Measurements of differential cross-sections in four-lepton events in 13 TeV proton-proton collisions with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2107 (2021) 005
  • Search for bottom-squark pair production in pppp collision events at s=13\sqrt{s} = 13 TeV with hadronically decaying τ\tau -leptons, bb -jets and missing transverse momentum using the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. D 104 (2021) 032014
  • Evidence for Higgs boson decays to a low-mass dilepton system and a photon in pp collisions at s=\sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Lett. B 819 (2021) 136412
  • Measurements of W+W+1W^+W^-+\ge 1 jet production cross-sections in pppp collisions at s=13\sqrt{s}=13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2106 (2021) 003
  • Search for supersymmetry in events with four or more charged leptons in 139 fb1^{-1} of s=13\sqrt{s}=13 TeV pppp collisions with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 07 (2021) 167
  • Impact of radiation on electronics and opto-electronics, M. Backhaus et al. , indéfini 1 (2021) 87-121
  • Measurements of radiation damage on silicon sensors, J. L. Agram et al. , indéfini 1 (2021) 59
  • A search for the decays of stopped long-lived particles at s=13\sqrt{s}=13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2107 (2021) 173
  • Search for dark matter in events with missing transverse momentum and a Higgs boson decaying into two photons in pppp collisions at s=13\sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2110 (2021) 013
  • Search for charged-lepton-flavour violation in Z-boson decays with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Nat. Phys 17 (2021) 819-825
  • Search for new phenomena in final states with two leptons and one or no bb -tagged jets at s=13\sqrt{s} = 13 TeV using the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. Lett 127 (2021) 141801
  • Configuration and performance of the ATLAS bb -jet triggers in Run 2, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 81 (2021) 1087
  • Search for chargino-neutralino pair production in final states with three leptons and missing transverse momentum in s=13\sqrt{s} = 13 TeV pppp collisions with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 81 (2021) 1118
  • Measurements of sensor radiation damage in the ATLAS inner detector using leakage currents, G. Aad et al. , ATLAS Collaboration, J. Instrum 16 (2021) P08025
  • Search for R-parity-violating supersymmetry in a final state containing leptons and many jets with the ATLAS experiment using s=13\sqrt{s} = 13 TeV proton–proton collision data, G. Aad et al. , ATLAS Collaboration, Eur. Phys. J. C 81 (2021) 1023
  • Measurement of the ttˉttˉt\bar{t}t\bar{t} production cross section in pppp collisions at s\sqrt{s} =13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 11 (2021) 118
  • Measurement of the production cross section of pairs of isolated photons in pppp collisions at 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2111 (2021) 169
  • Search for new phenomena in pppp collisions in final states with tau leptons, bb -jets, and missing transverse momentum with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. D 104 (2021) 112005
  • Search for charginos and neutralinos in final states with two boosted hadronically decaying bosons and missing transverse momentum in pppp collisions at s=13\sqrt{s}=13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, Phys. Rev. D 104 (2021) 112010
  • Measurement of bb -quark fragmentation properties in jets using the decay B±J/ψK±B^{\pm} \to J/\psi K^{\pm} in pppp collisions at s=13\sqrt{s} = 13 TeV with the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2112 (2021) 131
  • Search for dark matter produced in association with a Standard Model Higgs boson decaying into b-quarks using the full Run 2 dataset from the ATLAS detector, G. Aad et al. , ATLAS Collaboration, J. High Energy Phys. 2111 (2021) 209

Conference proceedings

2023: 1 conference proceeding

  • Flavour tagging with graph neural networks with the ATLAS detector, A. Duperrin , indéfini, 30th International Workshop on Deep-Inelastic Scattering and Related Subjects (2023), East Lansing, United States, 27-31 Mar 2023

2021: 2 conference proceedings

  • Test results of ATLASPIX3 — A reticle size HVCMOS pixel sensor designed for construction of multi chip modules, R. Schimassek, A. Andreazza, H. Augustin, M. Barbero , M. Benoit, F. Ehrler, G. Iacobucci, A. Meneses, P. Pangaud , M. Prathapan, A. Schöning, E. Vilella, A. Weber, M. Weber, W. Wong, H. Zhang, I. Perić, Nucl. Instrum. Meth. A, 986, 12th International 'Hiroshima' Symposium on the Development and Application of Semiconductor Tracking Detectors (2021) 164812, Hiroshima, Japan, 14-18 Dec 2019
  • Radiation hard monolithic CMOS sensors with small electrodes for High Luminosity LHC, H. Pernegger, P. Allport, I. Asensi Tortajada, M. Barbero , P. Barrillon , I. Berdalovic, C. Bespin, S. Bhat , D. Bortoletto, P. Breugnon , C. Buttar, R. Cardella, F. Dachs, V. Dao, Y. Degerli, H. Denizli, M. Dyndal, L. Flores Sanz de Acedo, P. Freeman, L. Gonella, A. Habib , T. Hemperek, T. Hirono, B. Hiti, T. Kugathasan, I. Mandić, M. Mikuž, K. Moustakas, M. Munker, K. Y. Oyulmaz, P. Pangaud , F. Piro, P. Riedler, H. Sandaker, E. J. Schioppa, P. Schwemling, A. Sharma, L. Simon Argemi, C. Solans Sanchez, W. Snoeys, T. Suligoj, T. Wang, N. Wermes, Nucl. Instrum. Meth. A, 986, 12th International 'Hiroshima' Symposium on the Development and Application of Semiconductor Tracking Detectors (2021) 164381, Hiroshima, Japan, 14-18 Dec 2019

Talk

2021: 1 talk

  • ATLAS and CMS latest results on ttH/tH - SM@LHC 2021, Strebler , Thomas , Standard Model at the LHC 2021, , indéfini, 26 Avr - 30 Avr 2021

Mémoires

2023: 3 mémoires

  • Development of artificial intelligence algorithms adapted to big data processing in embedded (FPGAs) trigger and data acquisition systems at the LHC, L. Laatu, Aix-Marseille Université, 03 Oct 2023
  • Conception et test d'une puce électronique pour le domaine de l'imagerie par comptage de photons par pixels hybrides, K. Bonkhal, Aix-Marseille Université, 13 Nov 2023
  • Implémentation d'algorithmes d'intelligence artificielle embarqués sur le système de lecture du calorimètre électromagnétique à argon liquide d'ATLAS, N. Chiedde, Aix-Marseille Université, 21 Nov 2023

2022: 2 mémoires

  • Commissioning and performance of the trigger and readout system of the liquid argon calorimeter of the ATLAS experiment., E. Fortin, Aix-Marseille Université, 29 Jun 2022
  • Unravelling the top-Higgs coupling with the ATLAS experiment at LHC, N. Kumari, Aix-Marseille Université, 16 Nov 2022

2021: 3 mémoires

  • Search for doubly charged scalar bosons decaying to W±W±W^{\pm}W^{\pm} at LHC, H. Xu, University of science and technology of China; Aix-Marseille University, 20 Jul 2021
  • Studies of the Higgs boson properties and search for new physics beyond the standard model in multilepton final states with the ATLAS detector at LHC, Z. Li, Aix-Marseille Université & Shandong Université, 16 Sep 2021
  • Search for SUSY Electroweak production at LHC Run 2 and study of CMOS sensor for ITk replacement in second-half of HL-LHC, N. Vu, Aix-Marseille University, 17 Dec 2021


Complete list (PDF)
  • December 2023 : Publication of the final di-Higgs results with Run 2 data, and start of the Run 3 data analysis. Two ATLAS CPPM group members (Thomas Strebler and Timothée Theveneaux-Pelzer) become coordinators within the di-Higgs group.

  • 24 Octobre 2023 : The CNRS crystal medal was awarded today to Eric Vigeolas, research engineer in mecanics and mecatronics, and project leader on the ATLAS ITk tracker, for the ATLAS CPPM team.

  • October 2023 : The ITkPixV2 ASIC for the ATLAS ITk detector (HL-LHC project) is back from the foundry. On top of many tests to be performed in laboratories, several testing campains under proton or ion flux are already planned for beginning of 2024, to test the circuit in harsh conditions close to those of HL-LHC (under our team supervision).

  • April 2023 : The new higher granularity e-gamma digital trigger based on the Liquid Argon Calorimeter, whose deployment was the goal of the Phase-I Calorimeter upgrade and put in place with large contributions from our team, has now become the new default trigger system for ATLAS, outperforming the performances of the old analog trigger system.

  • March 27th, 2023 : A large number of new ATLAS physics results have been presented during the winter conferences: Observation of the
    four-top-quark production
    , measurement of the ttW production, most precise single measurement of the strong interaction "alpha_s" coupling, improvement on the W mass measurement W... Some beautiful results from the ATLAS experiment in a context of restart of the Run 3 phase of the LHC.

  • March 22nd, 2023 : A major milestone of the ATLAS ITk project has been reached today. The very complex ITkPixV2 Integrated Circuit (IC), production version for the ATLAS pixel detector has been submitted for production. The IC will be used for the Run 4 of the ATLAS experiment in the new pixel detector (High Luminosity LHC phase, post-2028). It is the result of the effort of an almost 10-year long development by teams from more than 20 institutes worldwide, in the framework of the CERN RD53 project, among which the ATLAS CPPM team.

  • March 14th-15th 2023 : The first DRD7 workshop (ECFA process) "Electronics and On-Detector Processing" has taken place in CERN with implication from the team members for our activities in micro-electronics, as well as 250-300 participants over the two days. The ECFA process will structure R&D developments for particle physics at the european level for the next decade.

  • October 11th, 2022 : Elisabeth Petit, researcher in the CPPM team, receives the CNRS bronze medal, a reward that underlines her implication in Higgs boson studies but also in the upgrade project of the pixel detector of ATLAS Inner Tracker for the High Luminosity LHC phase.

  • August 22nd, 2022 : Intensity of the Higgs boson coupling as a function of the Z and W boson masses, as well of the masses of the muons, taus, and charm, bottom and top quarks. This summary plot shows the excellent agreement of the experimental data with the theory developed by Brout-Englert-Higgs to account for the electroweak symmetry breaking mechanism and the generation of the masses of bosons and fermions.

  • July 6th, 2022 : At the occasion of the 10-year anniversary of the Higgs boson discovery, a colloquium was organized by the national institute IN2P3 with a contribution of Elisabeth Petit, researcher in the CPPM team.

  • July 5th, 2022 : Today, the LHC has seen its first proton-proton collisions at the unprecedented center of mass energy of 13.6 TeV. After three years of stop for upgrade and maintenance work, it is the official kick-off of the Run 3 phase of operation for the LHC, during which further test of the Standard Model (SM) will be pursued in the Higgs sector and with searches for extensions to the SM of particles.

  • June 28th, 2022 : Elisabeth Petit, researcher in the ATLAS CPPM team, is invited in « la méthode scientifique », the french radio program of France Culture.

  • June the 2nd, 2022 : Georges Aad, researcher in the CPPMATLAS team, has received an « Outstanding Achievement Award 2022 », a prize given by the ATLAS collaboration for «exceptional contribution to the digital electronic system of the ATLAS Liquid Argon calorimeter trigger», a phase 1 upgrade installed and starting operation for the LHC Run 3, to efficiently treat increased event pile-up related to the higher luminosity of LHC. This prize acknowledges and rewards the importance and the quality of the CPPM ATLAS team work in this project. The finalization of this upgrade is on-going and the CPPM, with engineers, students and physicists is responsible for several key aspects. The new system is operational and collects the first collision data that the LHC has just started producing on May 28th, 2022 as Run 3 is now starting.

  • April 18th, 2022 : To prepare the production phase of the future ATLAS pixel detector for HL-LHC (ITK Pixel Detector project), the « mechanics and production » team has developed an automated glue deposition method, for the cells that shelter the modules before integration in the mechanical structures of the detector. This highly reliable method allows to deposit a quantity of glue with a 4% accuracy for 400 mg of glue used. This is important in order not to degrade the detector’s performance and guaranty a lifetime above 10 years in-situ. The production phase for the detector will take place from 2024 to 2026 and our team will handle the integration of about 50 modules per month during this phase.

  • March, 2022 : The ATLAS and CMS Collaborations have released as an input for the US Snowmass prospective exercise a common White Paper summarizing the most recent physics projection results for the High-Luminosity phase of the LHC (HL-LHC). The CPPM group was in particular directly involved in the prospect result related to the search for di-Higgs production at HL-LHC, which is one of the main cornerstones of the ATLAS HL-LHC physics program. Those results have confirmed that a 3-sigma evidence with ATLAS data and a 5-sigma observation combining with CMS is definitely by the end of HL-LHC data-taking.

  • December 13th-16th, 2021 : 13th FCPPL “France-China Particle Physics laboratory” workshop, in which the group was represented with presentations giving status reports of activities in the framework of several collaborations between our team and partner teams in China.

  • November 22nd, 2021 : The CPPM ATLAS team has been involved for many years in the search, the observation, and then the study of the Higgs boson production with a top quark pair. The ATLAS collaboration has just published a new study in which the Higgs boson decays to a b quark pair. The Higgs field gives mass to elementary particles by means of its interaction. The very heavy mass of the top quark (almost as heavy as a gold atom!) hints to the top quark having a special relation to the Higgs, and the study of this relation is the topic of these analyses. For the first time in this channel, the analysis is performed as a function of the Higgs boson transverse momentum. The CPPM team has deeply contributed to this study, in particular with the development of machine learning techniques.

  • November 2021 : Beam circulation has started in the LHC at the injection energy (2x450 GeV) in stable mode. The ATLAS detector registers new data and in particular with its Liquid Argon (LAr) Calorimeter. The LAr calorimeter has seen a major update during the recent long shutdown, for which the CPPM team was extremely active. The LAr system has started transmitting data for the first time with its new updated readout system and in particular in direction of the calorimeter first level trigger. This is an important milestone towards Run 3, which starts in spring 2022.

  • October 21st 2021 : Publication of the ECFA document(European Committee for Future Accelerators) concerning detector R&D perspectives and organization « Detector Research and Development Roadmap ». This document will structure detector R&D at colliders for the years to come.

  • End of October, 2021 : Protons are back in the LHC ! After more than two years of maintenance and updating of the collider and the detectors, LHC pilot runs are currently ongoing. The ATLAS detector recorded “Splash” events (a flux of particles resulting from the interaction between the beams and a collimator located before the detector). The first proton frictions happened at the LHC injection energy (450 GeV per beam) in stable mode in the last week of October. This has allowed ATLAS to register these first data and to validate its good functioning. In June 2022 this will be the start of Run 3, for which the LHC will raise its center of mass energy from 13 to 13.6 TeV.

  • June 2021 : Publication on the configuration and the performances of the Run 2 b-jet trigger. The Run 2 High Level Trigger (HLT) reduces the data rate from 100 kHz at the level 1 trigger output to save events on disk at a rate of about 1 kHz. The hadronic jets containing b-quarks are identified (b-tagged) in the HLT by exploiting the properties of b-hadrons, which have a relatively long lifetime, of the order of 1.5 ps, to reconstruct secondary vertices typically located few mm away from the hard-scatter interaction. The b-jet trigger software was redesigned to improve stability under increasingly harsh pile-up conditions. These changes, together with improved tracking performance in the trigger, the installation of the insertable B-layer for Run 2, and the usage of the most advanced algorithms lead to significantly improved performance compared to Run 1. The CPPM group has contributed to the success of the Run 2 b-jet trigger with multiples responsibilities (monitoring, software development and validation, calibration).

  • February 2021 : Probing for Single Event Effects (SEE) at the GANIL accelerator. The structures that were tested are memory blocks conceived to be SEE-resistant. They use hardening methods such as data and control line redundancy, memory triplication, DICE cells, physical layout level separation…. The tested memories are implemented in three different technologies (TJ180, AMS180 and LF150). This work is done in the framework of the DICE master project and of the RD50 collaboration.

  • End march 2021 : The ATLAS collaboration has released a new result on the Higgs boson self-interaction, looking for events containing a Higgs boson pair. This process is very rare, about 1000 times rarer than the production of a Higgs boson alone. Events where one Higgs boson decays to two photons and the other Higgs bosons to two bottom quarks are a powerful handle to search for Higgs boson pair production. New analysis technics were developed to search for this rare process (only 12 such events would have been produced at the LHC so far) by several teams, including the ATLAS team of CPPM. Limits were set on how often pairs of Higgs bosons are produced, at 4.1 times the Standard Model prediction. This result sets the world's best limits on the Higgs self-coupling. But we will need much more data to precisely measure the Higgs self-coupling and to see whether it agrees with the Standard Model prediction. The High-Luminosity upgrade of the LHC plans to deliver a dataset 20 times larger than the one we used for this study. The ATLAS group at CPPM is deeply involved in the upgrade of the detectors for this new phase.

  • February 2021 : Emmanuel Monnier has been re-elected as ATLAS Liquid Argon Calorimeter Project Leader for two years, with his new terms starting on March 1st 2021.

  • October, 29th 2020 : New results concerning the production of the Higgs boson in association to a top quark pair (ttH) were shown at the Higgs 2020 conference. This analysis concerns the complete ATLAS Run 2 set (139 fb-1) and benefited from the strong work from several members of our group.

  • October, 8th 2020: Submission to the European Physical Journal C of the paper "Search for phenomena beyond the Standard Model in events with large b-jet multiplicity using the ATLAS detector at the LHC". This analysis, to which our group is a strong contributor, allows to establish model-independent limits to the presence of new physics in events with high b-jet multiplicity and, at the same time, to constrain natural supersymmetric models violating the R-Parity.

  • End of March 2020: While the virus’ proliferation is spreading rapidly in different parts of the world, the researchers mobilize international action in response to the new coronavirus. The grid computing infrastructure at CPPM that is mainly used during normal time by the LHC experiments ATLAS and LHCb in the context of WLCG collaboration (Worldwide LHC Computing Grid) is now ready to receive more jobs from biomedical research projects related to Covid-19 research studies. We work in coordination with the virtual organisation biomed and INSERM computing for researchers to have access to our ressources.

  • March, 30th 2020: The CPPM grid computing infrastructure for ATLAS is now considered as a Nucleus. The Nucleus sites are the main processing sites receiving data directly staged at CC-IN2P3 (Tier-1) but processed outside CC-IN2P3. To have this Tier-1 like status, the grid site needs to have enough storage, very good availability and processing efficiency for data in addition to a good network bandwidth. So far, only the LAPP Tier-2 had this status in France. It is therefore a recognition for the CPPM Tier 2.

  • March, 17th 2020: On March 17 2020, the ITkPixV1 chip was submitted to the TSMC foundry for production. With a surface area of more than 4 cm², this chip has been designed in the 65 nm CMOS process and will tolerate an ionizing dose of more than 500 Mrad. It contains more than 1/2 billion transistors and 153600 pixels of 50x50 µm² organized in 2400 regions of 8x8 pixels. This is the culmination of nearly 8 years of work by CERN's RD53 collaboration, to which the CPPM's ATLAS team has been a major contributor since its foundation. This is the pre-production version of the chip which will equip, in more than 33,000 units, the 5 internal pixel layers of the future ATLAS post-2026 trajectograph. This is a major step towards improving the ATLAS detector for the High Luminosity phase of CERN's Large Hadron Collider, which has now been completed.

  • January 2020: The CERN Yellow Report "Physics of the HL-LHC, and perspectives at the HE-LHC" is now published. This report summarizes the outcome of five working groups that have studied the physics potential of the High-Luminosity phase of the LHC (14 TeV HL-LHC) as well as perspectives for a future possible High Energy LHC (27 TeV HE-LHC), and covers topics such as: Standard Model measurements, Higgs boson properties, flavor physics with heavy quarks, QCD at high density and temperature, and searches for phenomena Beyond the Standard Model. The ~1400 pages report can be found at CERN Yellow Report: Physics of the HL-LHC, and HE-LHC perspectives.

  • July 2019: 64 ATLAS contributions given at the European Physics Society High Energy Physics 2019 conference in Ghent, Belgium. ATLAS highlights can be found at http://atlas.cern/updates/atlas-news/eps-2019-highlights .

  • Spring 2019 : Success of the AAP (Call for Project) of the Aix-Marseille AMIDEX fundation for the AIDAQ project: This project deals with the implementation of artificial intelligence algorithms on FPGAs (in particular of neural networks) for the real time computation of the energies deposited in the ATLAS Liquid Argon Calorimeter.

  • January 2019 - now: LHC Long Shutdown 2 and on-going ATLAS detector Phase I Upgrade targetting Run 3 data taking. Our group is a strong contributor to the installation of the new readout electronics for the electromagnetic calorimeter.

  • December 2018: End of proton-proton data taking (Run 2 Phase), with a record collected luminosity of 139 fb-1 which will lead to precision analysis of the Higgs boson properties, as well as searches for New Physics in an extended mass range.

  • 13th November 2018: Aix-Marseille Thesis award 2017 given to Thomas Calvet. This work comes in recognition of his excellent research work on the assocatied Higgs production with a quark top pair where the Higgs decays to two bottom quarks (so-called ttH(bb) channel), and the b jet tagging with the ATLAS experiment at the LHC. https://hal-amu.archives-ouvertes.fr/tel-01681700/

  • 4th June 2018: publication of the production of the Higgs boson with a pair of top quarks (ttH) by the ATLAS experiment, with a significant contribution by the CPPM group. https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2018-13/

  • 24th December 2017: evidence seen by ATLAS of the ttH associate production. https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2017-02/

  • 2017: finalization of the Phase 2 Upgrade TDRs, including those on calorimetry and ITk pixels.

  • April 2016: first proton collisions in ATLAS for 2016

  • 3rd June 2015: stable beams in the LHC, first collisions at 13 TeV and first signals in the new IBL layer! The beginning of Run 2...

  • 9th December 9, 2014: A first LHC magnet reaches the current needed to communicate an energy of 6.5 TeV to protons, paving the way for the LHC Run 2 data taking to begin in spring 2015.

  • June 2014: The first 3D pixel circuit for ATLAS, designed at CPPM, is qualified to withstand the radiation dose expected at HL-LHC.

  • 7th May 2014: insertion of the fourth layer of IBL pixels in ATLAS for which the CPPM made major contributions to the FE-I4 electronic readout chip and to mechanics.

  • October 2013: Nobel Prize in Physics awarded to F. Englert and P. Higgs.

  • 4th July 2012: announcement of the discovery of the Higgs boson by ATLAS (and CMS).

  • 17th December 2012: end of the LHC Run 1 data collection period.

  • 30th March 2010: first high-energy proton collisions (7 TeV) in the LHC.

Belle II

The Belle II experiment is installed at the e+e- SuperKEKB accelarator in Japan. Its goal is to study the properties of beauty and charmed mesons as well as tau leptons, as a way to search for physics beyond the Standard Model.

The physics data taking with a complete detector started in spring 2019 with the final goal to collect a dataset 50 times bigger than the previous experiment, Belle.

The collaboration has more than 1000 members. France participates through four laboratories: IJCLab, IPHC, cc-IN2P3 and CPPM. The international research lab TYL was also created in 2023 by IN2P3 at KEK.

The interests of CPPM are focused on data analysis involving tau leptons: tau lepton flavor violating decays and rare decays of B to tau. These activities are developed thanks to European fundings obtained by Justine Serrano (ERC consolidator grant ’NEPAL’) The group is also involved in tracking studies an operation of the silicon vertex detector (SVD). We also particpate to the design of the OBELIX chip for the upgrade of the vertex detector.

Link to the group website

Link to Facebook

Link to public wiki

View of Belle II detector - Crédit Coll. Belle II
ERC Consolidator Grant

Researchers and Research professors

PHD students and post-doctoral fellows

Engineers and Technicians

PhD started in 2023
Subject: Recherche des désintégrations violant la saveur leptonique
Fundings: CNRS/AMU
PhD director : Justine Serrano
Co-supervisor: Giampiero Mancinelli
PhD started in 2022
Subject: Recherche des désintégrations violant la saveur leptonique BτX B \rightarrow \tau \ell X avec l'expérience Belle II.
Fundings: CNRS
PhD director : Justine Serrano
PhD started in 2021
Subject: Search for lepton flavour violating decays at Belle II
Fundings: CNRS ERC belle II
PhD director : Justine Serrano
See old PhDs (2)

Publications Belle2

Articles

2024: 1 article

  • Measurement of branching fractions and direct CP asymmetries for BKπB \rightarrow K \pi and Bππ B \rightarrow \pi \pi decays at Belle II, Adachi, I. et al. , Belle2 Collaboration, Phys. Rev. D 109 (2024) 012001

2023: 20 articles

  • Measurement of lepton mass squared moments in BχcνB \rightarrow \chi_c \ell \nu_{\ell} decays with the Belle II experiment, Abudinén, F. et al. , Belle2 Collaboration, Phys. Rev. D 107 (2023) 072002
  • Measurement of the Λctoto\Lambda_c toto Lifetime, Abudinén, F. et al. , Belle2 Collaboration, Phys. Rev. Lett 130 (2023) 071802
  • Search for a Dark Photon and an Invisible Dark Higgs Boson in μ+μ\mu^+ \mu^- and Missing Energy Final States with the Belle II Experiment, Abudinén, F. et al. , Belle2 Collaboration, Phys. Rev. Lett 130 (2023) 071804
  • Measurement of the Ωc0\Omega_c^0 lifetime at Belle II, F. J. Abudinen et al. , Belle2 Collaboration, Phys. Rev. D 107 (2023) L031103
  • Observation of e+eωχbJ(1P)e^+ e^- \rightarrow \omega \chi_{bJ} (1P) and Search for χbωΥ(1S)\chi_b \rightarrow \omega \Upsilon(1S) at s\sqrt{s} near 10.75 GeV, Adachi, I. et al. , Belle2 Collaboration, Phys. Rev. Lett 130 (2023) 091902
  • Search for an Invisible ZZ' in a Final State with Two Muons and Missing Energy at Belle II, Adachi, I. et al. , Belle2 Collaboration, Phys. Rev. Lett 130 (2023) 231801
  • Search for Lepton-Flavor-Violating τ\tau Decays to a Lepton and an Invisible Boson at Belle II, Adachi, I. et al. , Belle2 Collaboration, Phys. Rev. Lett 130 (2023) 181803
  • Test of Light-Lepton Universality in the Rates of Inclusive Semileptonic BB -Meson Decays at Belle II, Aggarwal, L. et al. , Belle2 Collaboration, Phys. Rev. Lett 131 (2023) 051804
  • Measurement of the B0B^0 lifetime and flavor-oscillation frequency using hadronic decays reconstructed in 2019–2021 Belle II data, Abudinén, F. et al. , Belle2 Collaboration, Phys. Rev. D 107 (2023) L091102
  • Measurement of the branching fraction and CP asymmetry of B0π0π0B^0 \rightarrow \pi^0 \pi^0 decays using 198×106BB 198×10^6 BB pairs in Belle II data, Abudinén, F. et al. , Belle2 Collaboration, Phys. Rev. D 107 (2023) 112009
  • Novel method for the identification of the production flavor of neutral charmed mesons, Adachi, I. et al. , Belle2 Collaboration, Phys. Rev. D 107 (2023) 112010
  • Measurement of CP Violation in B0Ks0π0B^0 \rightarrow K_s^0 \pi^0 Decays at Belle II, Adachi, I. et al. , Belle2 Collaboration, Phys. Rev. Lett 131 (2023) 111803
  • Measurement of the τ\tau -lepton mass with the Belle II experiment, Adachi, I. et al. , Belle2 Collaboration, Phys. Rev. D 108 (2023) 032006
  • Precise Measurement of the Ds+D_s^+ Lifetime at Belle II, Adachi, I. et al. , Belle2 Collaboration, Phys. Rev. Lett 131 (2023) 171803
  • Measurement of CPC\!P asymmetries and branching-fraction ratios for B±DK±B^\pm \to DK^\pm and Dπ±D\pi^\pm with DKS0K±πD\to K^0_{\rm S} K^\pm\pi^\mp using Belle and Belle II data, Adachi, I. et al. , J. High Energy Phys. 09 (2023) 146
  • Search for a long-lived spin-0 mediator in bsb \rightarrow s transitions at the Belle II experiment, Adachi, I. et al. , Belle2 Collaboration, Phys. Rev. D 108 (2023) L111104
  • Search for a τ+τ\tau^+\tau^- resonance in e+eμ+μτ+τe^{+}e^{-}\rightarrow \mu^{+}\mu^{-} \tau^+\tau^- events with the Belle II experiment, Adachi, I. et al. , Belle2 Collaboration, Phys. Rev. Lett 131 (2023) 121802
  • Measurement of CP asymmetries in B0ϕKs0B^0 \rightarrow \phi K_s^0 decays with Belle II, Adachi, I. et al. , Belle2 Collaboration, Phys. Rev. D 108 (2023) 072012
  • Tests of Light-Lepton Universality in Angular Asymmetries of B0DνB^0 \rightarrow D^* \ell \nu Decays, Adachi, I. et al. , Belle2 Collaboration, Phys. Rev. Lett 131 (2023) 181801
  • Determination of |VcbV_{cb} | using Bˉ0D+νˉ\bar B^0 \rightarrow D^{*+} \ell^- \bar\nu_\ell decays with Belle II, Adachi, I. et al. , Belle2 Collaboration, Phys. Rev. D 108 (2023) 9

2022: 3 articles

  • B-flavor tagging at Belle II, F. Abudinén et al. , Belle2 Collaboration, Eur. Phys. J. C 82 (2022) 283
  • Combined analysis of Belle and Belle II data to determine the CKM angle ϕ3 \phi_{3} using B+D(KS0hh+)h+B^+ \to D(K_{S}^0 h^- h^+) h^+ decays, F. Abudinén et al. , Belle2 Collaboration, J. High Energy Phys. 02 (2022) 063
  • The design, construction, operation and performance of the Belle II silicon vertex detector, K. Adamczyk et al. , Belle2 Collaboration, J. Instrum 17 (2022) P11042

2021: 2 articles

  • Search for B+K+ννˉB^{+} \to K^{+} \nu\bar{\nu} decays using an inclusive tagging method at Belle II, F. Abudinén et al. , Belle2 Collaboration, Phys. Rev. Lett 127 (2021) 181802
  • Precise measurement of the D0D^0 and D+D^+ lifetimes at Belle II, F. Abudinén et al. , Belle2 Collaboration, Phys. Rev. Lett 127 (2021) 211801

Conference proceedings

2024: 3 conference proceedings

  • The DMAPS upgrade of the Belle II vertex detector, S. Bettarini, M. Babeluk, M. Barbero , J. Baudot, F. Bosi, Y. Buch, G. Casarosa, L. Federici, F. Forti, A. Kumar, C. Marinas, M. Massa, L. Massaccesi, J. Mazorra de Cos, M. Minuti, S. Mondal, K. R. Nakamura, G. Rizzo, C. Schwanda, M. Schwickardi, J. Instrum, 19, 16th Topical Seminar on Innovative Particle and Radiation Detectors (2024) C02060, Siena, Italy, 25-29 Sep 2023
  • Upgrade of Belle II vertex detector with CMOS pixel technology, M. Schwickardi, M. Babeluk, M. Barbero , J. Baudot, T. Bergauer, G. Bertolone, S. Bettarini, F. Bosi, P. Breugnon , Y. Buch, G. Casarosa, G. Dujany, C. Finck, F. Forti, A. Frey, A. Himmi, C. Irmler, A. Kumar, C. Marinas, M. Massa, L. Massaccesi, J. M. de Cos, M. Minuti, S. Mondal, P. Pangaud , H. Pham, I. Ripp-Baudot, G. Rizzo, B. Schwenker, I. Valin, J. Instrum, 19, 24th international Workshop on Radiation Imaging Detectors (2024) C01054, Oslo, Norway, 25-29 Jun 2023
  • Silicon vertex detector of the Belle II experiment, S. Mondal, K. Adamczyk, L. Aggarwal, H. Aihara, T. Aziz, S. Bacher, S. Bahinipati, G. Batignani, J. Baudot, P. K. Behera, S. Bettarini, T. Bilka, A. Bozek, F. Buchsteiner, G. Casarosa, L. Corona, S. B. Das, G. Dujany, C. Finck, F. Forti, M. Friedl, A. Gabrielli, B. Gobbo, S. Halder, K. Hara, S. Hazra, T. Higuchi, C. Irmler, A. Ishikawa, Y. Jin, M. Kaleta, A. B. Kaliyar, J. Kandra, K. H. Kang, P. Kodyš, T. Kohriki, R. Kumar, K. Lalwani, K. Lautenbach , R. Leboucher , S. C. Lee, J. Libby, L. Martel, L. Massaccesi, G. B. Mohanty, K. R. Nakamura, Z. Natkaniec, Y. Onuki, F. Otani, A. Paladino, E. Paoloni, H. Park, L. Polat , K. K. Rao, I. Ripp-Baudot, G. Rizzo, Y. Sato, C. Schwanda, J. Serrano , T. Shimasaki, J. Suzuki, S. Tanaka, H. Tanigawa, F. Tenchini, R. Thalmeier, R. Tiwary, T. Tsuboyama, Y. Uematsu, L. Vitale, Z. Wang, J. Webb, O. Werbycka, J. Wiechczynski, H. Yin, L. Zani , J. Instrum, 19, 16th Topical Seminar on Innovative Particle and Radiation Detectors (2024) C02038, Siena, Italy, 25-29 Sep 2023

2023: 7 conference proceedings

  • CMOS MAPS upgrade for the Belle II Vertex Detector, M. Babeluk, M. Barbero , J. Baudot, T. Bergauer, F. Bernlochner, S. Bettarini, F. Bosi, Y. Buch, G. Casarosa, J. Dingfelder, T. Fillinger, C. Finck, A. Frey, C. Hu, C. Irmler, C. Marinas, M. Massa, L. Massaccesi, M. Minuti, H. Pham, G. Rizzo, C. Schwanda, B. Schwenker, M. Schwickardi, C. Wessel, Nucl. Instrum. Meth. A, 1048, 15th Pisa Meeting on Advanced Detectors (2023) 168015, La Biodola, Italy, 22-28 May 2022
  • The silicon vertex detector of the Belle II experiment, C. Irmler, K. Adamczyk, L. Aggarwal, H. Aihara, T. Aziz, S. Bacher, S. Bahinipati, G. Batignani, J. Baudot, P. K. Behera, S. Bettarini, T. Bilka, A. Bozek, F. Buchsteiner, G. Casarosa, L. Corona, T. Czank, S. B. Das, G. Dujany, C. Finck, F. Forti, M. Friedl, A. Gabrielli, E. Ganiev, B. Gobbo, S. Halder, K. Hara, S. Hazra, T. Higuchi, A. Ishikawa, H. B. Jeon, Y. Jin, M. Kaleta, A. B. Kaliyar, J. Kandra, K. H. Kang, P. Kapusta, P. Kodyš, T. Kohriki, M. Kumar, R. Kumar, C. La Licata, K. Lalwani, K. Lautenbach , R. Leboucher , S. C. Lee, J. Libby, L. Martel, L. Massaccesi, G. B. Mohanty, K. R. Nakamura, Z. Natkaniec, Y. Onuki, W. Ostrowicz, F. Otani, A. Paladino, E. Paoloni, H. Park, L. Polat , K. K. Rao, I. Ripp-Baudot, G. Rizzo, Y. Sato, C. Schwanda, J. Serrano , T. Shimasaki, J. Suzuki, S. Tanaka, H. Tanigawa, F. Tenchini, R. Thalmeier, R. Tiwary, T. Tsuboyama, Y. Uematsu, L. Vitale, K. Wan, Z. Wang, J. Webb, O. Werbycka, J. Wiechczynski, H. Yin, L. Zani , Nucl. Instrum. Meth. A, 1045, 15th Pisa Meeting on Advanced Detectors (2023) 167578, La Biodola, Italy, 22-28 May 2022
  • Recent results from Belle II, V. Bertacchi , Nucl.Part.Phys.Proc, 324-329, 25th International Conference in Quantum Chromodynamics (2023) 107-112, Montpellier, France, 4-07 Jul 2022
  • Status of the BELLE II Pixel Detector, Giakoustidis, Georgios, Abudinen, Fernando, Ackermann, Karlheinz, Ahlburg, Patrick, Albalawi, Mohammed, Alonso, Oscar, Andricek, Laci, Ayad, Rachid, Babu, Varghese, Baur, Anselm, Bernlochner, Florian, Bilka, Tadeas, Bolz, Arthur, Bozek, Andrzej, Camien, Christian, Caldwell, Allen Christopher, Cao, Lu, Chekelian, Vladimir, Dieguez, Angel, Dingfelder, Jochen Christian, Dolezal, Zdenek, Fras, Markus, Frey, Ariane, Gabriel, Miroslav, Gadow, Karsten, Gessler, Thomas, Getzkow, Dennis, Li Gioi, Luigi, Greenwald, Daniel, Heck, Martin, Hensel, Martin, Hoek, Matthias, Huber, Stefan, Kandra, Jakub, Kapusta, Pjotr, Karl, Robert, Kehl, Jasper, Kiesling, Christian, Kisielewski, Bartlomiej, Kittlinger, David, Klose, Daniel, Kodys, Peter, Koffmane, Christian, Konorov, Igor, Krein, Matthäus, Krivokuca, Silvia, Kuhr, Thomas, Kurz, Simon, Kvasnicka, Peter, Lange, Jens Sören, Lautenbach, Klemens, Leis, Ullrich, Leitl, Philipp, Levit, Dmytro, Liemann, Gerhard, Liu, Qingyuan, Liu, Zhen’An, Lück, Thomas, Marinas, Carlos, Mccarney, Sara, Moser, Hans-Günther, Moya, David, Müller, Felix Johannes, Müller, Felix, Niebuhr, Carsten, Ninkovic, Jelena, Paschen, Botho, Paul, Stephan, Peric, Ivan, Pitzl, Daniel, Rabusov, Andrei, Reif, Markus, Reiter, Simon Patrik, Richter, Rainer, Ritter, Martin, Ritzert, Michael, Gonzalez Sanchez, Javier, Scavino, Bianca, Schaller, Gerhard, Schmitz, Jannes, Schnecke, Martina, Schopper, Florian, Schreeck, Harrison, Schwenker, Benjamin, Schwickardi, Marike, Sedlmeyer, Reinhard, Sfienti, Concettina, Simon, Frank, Skambraks, Sebastian, Skorupa, Justin, Soloviev, Yuri, Spruck, Björn, Stefkova, Slavomira, Stever, Reimer, Tafelmayer, Eva, Takahashi, Maiko, Vila, Ivan, Lopez Virto, Amparo, Vogt, Sven, Wang, Chunjie, Wieduwilt, Philipp, Windel, Hendrik, Ye, Hua, Zhao, Jingzhou, Zlebcik, Radek, PoS, Pixel2022, 10th International Workshop on Semiconductor Pixel Detectors for Particles and Imaging (2023) 005, Santa Fe, United States, 12-16 Dec 2022
  • Time-dependent, hadronic B decays and electroweak penguins at Belle II, V. Bertacchi , indéfini, 57th Rencontres de Moriond on QCD and High Energy Interactions (2023), La Thuile, Italy, 25 Mar - 01 Apr 2023
  • Belle II status and prospects for studies of neutral currents, V. Bertacchi , J. Instrum, 18, New Frontiers in Lepton Flavor 2023 (2023) C08015, Pisa, Italy, 15-17 May 2023
  • The Silicon Vertex Detector of the Belle II Experiment, Sato, Yo, Adamczyk, K., Aggarwal, L., Aihara, H., Aziz, T., Bacher, S., Bahinipati, S., Batignani, G., Baudot, J., Behera, P.K., Bettarini, S., Bilka, T., Bozek, A., Buchsteiner, F., Casarosa, Giulia, Corona, L., Das, S., Dujany, G., Finck, C., Forti, F., Friedl, M., Gabrielli, A., Gobbo, B., Halder, S., Hara, K., Hazra, S., Higuchi, T., Irmler, C., Ishikawa, A., Jin, Y., Kaleta, M., Kaliyar, A.B., Kandra, Jakub, Kang, K.H., Kodyš, P., Kohriki, T., Kumar, R., Lalwani, K., Lautenbach, K., Leboucher, R., Lee, S.C., Libby, J., Martel, L., Massaccesi, L., Mohanty, G.B., Mondal, S., Nakamura, K.R., Natkaniec, Z., Onuki, Y., Otani, F., Paladino, A., Paoloni, E., Park, H., Polat, L., Rao, K.K., Ripp-Baudot, I., Rizzo, G., Schwanda, C., Serrano, J., Shimasaki, T., Suzuki, J., Tanaka, S., Tanigawa, H., Tenchini, F., Thalmeier, R., Tiwary, R., Tsuboyama, T., Uematsu, Y., Vitale, L., Wang, Z.M., Webb, J., Werbycka, O., Wiechczynski, J., Yin, H., Zani, Laura, PoS, EPS-HEP2023, 2023 European Physical Society Conference on High Energy Physics (2023) 550, Hamburg, Germany, 21-25 Aug 2023

2022: 5 conference proceedings

  • Performance and running experience of the Belle II silicon vertex detector, K. R. Nakamura, K. Adamczyk, L. Aggarwal, H. Aihara, T. Aziz, S. Bacher, S. Bahinipati, G. Batignani, J. Baudot, P. K. Behera, S. Bettarini, T. Bilka, A. Bozek, F. Buchsteiner, G. Casarosa, L. Corona, T. Czank, S. B. Das, G. Dujany, F. Forti, M. Friedl, A. Gabrielli, E. Ganiev, B. Gobbo, S. Halder, K. Hara, S. Hazra, T. Higuchi, C. Irmler, A. Ishikawa, H. B. Jeon, Y. Jin, C. Joo, M. Kaleta, A. B. Kaliyar, J. Kandra, K. H. Kang, P. Kapusta, P. Kodyš, T. Kohriki, M. Kumar, R. Kumar, C. La Licata, K. Lalwani, S. C. Lee, J. Libby, L. Massaccesi, S. N. Mayekar, G. B. Mohanty, T. Morii, Z. Natkaniec, Y. Onuki, W. Ostrowicz, A. Paladino, E. Paoloni, H. Park, G. Polat , K. K. Rao, I. Ripp-Baudot, G. Rizzo, D. Sahoo, C. Schwanda, J. Serrano , J. Suzuki, S. Tanaka, H. Tanigawa, R. Thalmeier, R. Tiwari, T. Tsuboyama, Y. Uematsu, O. Verbycka, L. Vitale, K. Wan, Z. Wang, J. Webb, J. Wiechczynski, H. Yin, L. Zani , J. Phys. Conf. Ser., 2374, 5th International Conference on Technology and Instrumentation in Particle Physics (2022) 012059, Online, United States, 24-28 May 2021
  • Simulation of the Belle II silicon vertex detector, M. Kaleta, K. Adamczyk, L. Aggarwal, H. Aihara, T. Aziz, S. Bacher, S. Bahinipati, G. Batignani, J. Baudot, P. K. Behera, S. Bettarini, T. Bilka, A. Bozek, F. Buchsteiner, G. Casarosa, L. Corona, T. Czank, S. B. Das, G. Dujany, C. Finck, F. Forti, M. Friedl, A. Gabrielli, E. Ganiev, B. Gobbo, S. Halder, K. Hara, S. Hazra, T. Higuchi, C. Irmler, A. Ishikawa, H. B. Jeon, Y. Jin, C. Joo, A. B. Kaliyar, J. Kandra, K. H. Kang, P. Kapusta, P. Kodyš, T. Kohriki, M. Kumar, R. Kumar, C. La Licata, K. Lalwani, R. Leboucher , S. C. Lee, J. Libby, L. Martel, L. Massaccesi, S. N. Mayekar, G. B. Mohanty, T. Morii, K. R. Nakamura, Z. Natkaniec, Y. Onuki, W. Ostrowicz, A. Paladino, E. Paoloni, H. Park, L. Polat , K. K. Rao, I. Ripp-Baudot, G. Rizzo, D. Sahoo, C. Schwanda, J. Serrano , J. Suzuki, S. Tanaka, H. Tanigawa, R. Thalmeier, R. Tiwary, T. Tsuboyama, Y. Uematsu, O. Verbycka, L. Vitale, K. Wan, Z. Wang, J. Webb, J. Wiechczynski, H. Yin, L. Zani , Nucl. Instrum. Meth. A, 1032, 30th International Workshop on Vertex Detectors (2022) 166630, Online, United Kingdom, 27-30 Sep 2021
  • The silicon vertex detector of the Belle II experiment, G. Dujany, K. Adamczyk, L. Aggarwal, H. Aihara, T. Aziz, S. Bacher, S. Bahinipati, G. Batignani, J. Baudot, P. K. Behera, S. Bettarini, T. Bilka, A. Bozek, F. Buchsteiner, G. Casarosa, L. Corona, T. Czank, S. B. Das, C. Finck, F. Forti, M. Friedl, A. Gabrielli, E. Ganiev, B. Gobbo, S. Halder, K. Hara, S. Hazra, T. Higuchi, C. Irmler, A. Ishikawa, H. B. Jeon, Y. Jin, C. Joo, M. Kaleta, A. B. Kaliyar, J. Kandra, K. H. Kang, P. Kapusta, P. Kodyš, T. Kohriki, M. Kumar, R. Kumar, C. La Licata, K. Lalwani, R. Leboucher , S. C. Lee, J. Libby, L. Martel, L. Massaccesi, S. N. Mayekar, G. B. Mohanty, T. Morii, K. R. Nakamura, Z. Natkaniec, Y. Onuki, W. Ostrowicz, A. Paladino, E. Paoloni, H. Park, L. Polat , K. K. Rao, I. Ripp-Baudot, G. Rizzo, D. Sahoo, C. Schwanda, J. Serrano , J. Suzuki, S. Tanaka, H. Tanigawa, R. Thalmeier, R. Tiwari, T. Tsuboyama, Y. Uematsu, O. Verbycka, L. Vitale, K. Wan, Z. Wang, J. Webb, J. Wiechczynski, H. Yin, L. Zani , J. Instrum, 17, 12th International Conference on Position Sensitive Detectors (2022) C08014, Birmingham, United Kingdom, 12-17 Sep 2021
  • The Silicon Vertex Detector of the Belle II experiment, L. Zani , K. Adamczyk, L. Aggarwal, H. Aihara, T. Aziz, S. Bacher, S. Bahinipati, G. Batignani, J. Baudot, P. K. Behera, S. Bettarini, T. Bilka, A. Bozek, F. Buchsteiner, G. Casarosa, L. Corona, T. Czank, S. B. Das, G. Dujany, C. Finck, F. Forti, M. Friedl, A. Gabrielli, E. Ganiev, B. Gobbo, S. Halder, K. Hara, S. Hazra, T. Higuchi, C. Irmler, A. Ishikawa, H. B. Jeon, Y. Jin, M. Kaleta, A. B. Kaliyar, J. Kandra, K. H. Kang, P. Kapusta, P. Kodys, T. Kohriki, M. Kumar, R. Kumar, C. La Licata, K. Lalwani, R. Leboucher , S. C. Lee, J. Libby, L. Martel, L. Massaccesi, S. N. Mayekar, G. B. Mohanty, T. Morii, K. R. Nakamura, Z. Natkaniec, Y. Onuki, W. Ostrowicz, A. Paladino, E. Paoloni, H. Park, L. Polat , K. K. Rao, I. Ripp-Baudot, G. Rizzo, D. Sahoo, C. Schwanda, J. Serrano , J. Suzuki, S. Tanaka, H. Tanigawa, R. Thalmeier, R. Tiwary, T. Tsuboyama, Y. Uematsu, L. Vitale, K. Wan, Z. Wang, J. Webb, O. Werbycka, J. Wiechczynski, H. Yin, Nucl. Instrum. Meth. A, 1038, 16th Vienna Conference on Instrumentation (2022) 166952, Wien, Austria, 21-25 Feb 2022
  • Measurement of the cluster position resolution of the Belle II Silicon Vertex Detector, R. Leboucher , K. Adamczyk, L. Aggarwal, H. Aihara, T. Aziz, S. Bacher, S. Bahinipati, G. Batignani, J. Baudot, P. K. Behera, S. Bettarini, T. Bilka, A. Bozek, F. Buchsteiner, G. Casarosa, L. Corona, T. Czank, S. B. Das, G. Dujany, C. Finck, F. Forti, M. Friedl, A. Gabrielli, E. Ganiev, B. Gobbo, S. Halder, K. Hara, S. Hazra, T. Higuchi, C. Irmler, A. Ishikawa, H. B. Jeon, Y. Jin, C. Joo, M. Kaleta, A. B. Kaliyar, J. Kandra, K. H. Kang, P. Kapusta, P. Kodyš, T. Kohriki, M. Kumar, R. Kumar, C. La Licata, K. Lalwani, S. C. Lee, J. Libby, L. Martel, L. Massaccesi, S. N. Mayekar, G. B. Mohanty, T. Morii, K. R. Nakamura, Z. Natkaniec, Y. Onuki, W. Ostrowicz, A. Paladino, E. Paoloni, H. Park, L. Polat , K. K. Rao, I. Ripp-Baudot, G. Rizzo, D. Sahoo, C. Schwanda, J. Serrano , J. Suzuki, S. Tanaka, H. Tanigawa, R. Thalmeier, R. Tiwary, T. Tsuboyama, Y. Uematsu, O. Verbycka, L. Vitale, K. Wan, Z. Wang, J. Webb, J. Wiechczynski, H. Yin, L. Zani , Nucl. Instrum. Meth. A, 1033, 30th International Workshop on Vertex Detectors (2022) 166746, Online, United Kingdom, 27-30 Sep 2021

2021: 1 conference proceeding

  • Track reconstruction efficiency measurement using e+eτ+τe^{+}e^{-}\rightarrow\tau^+\tau^- events at Belle II, L. Zani , PoS ICHEP2020, 2020, 40th International Conference on High Energy Physics (2021) 797, Prague, indéfini, 30 Jul - 05 Aug 2020

Talks

2023: 5 talks

  • Moriond QCD 2023, V. Bertacchi , Moriond QCD 2023, La Thuile, Italy, 24-27 Mar 2023
  • New frontiers in lepton flavour, V. Bertacchi , New frontiers in lepton flavour, Pisa, Italy, 15-17 May 2023
  • BEAUTY 2023, R. Leboucher , BEAUTY 2023, Clermont Ferrand, France, 5-10 Jul 2023
  • CKM 2023, J. Serrano , CKM2023, Santiago de Compostela, Spain, 18-23 Sep 2023
  • GDR-InF annual workshop 2023, V. Bertacchi , A. Thaller , K. Lautenbach , C. Lemettais , GDR-InF annual workshop, Mont Saint Odile, France, 6-8 Nov 2023

2022: 7 talks

  • VCI 2022, L. Zani , VCI 2022, , indéfini, 21-25 Feb 2022
  • DIS 2022, K. Lautenbach , DIS 2022, , indéfini, 2-6 Mai 2022
  • Blois 2022, L. Zani , Blois 2022, , indéfini, 22-27 May 2022
  • QCD 2022, V. Bertacchi , QCD 2022, Montpelier, France, 4-9 Jul 2022
  • Vietnam Flavour Physics Conference 2022, L. Polat , Vietnam Flavour Physics Conference 2022, Quy Nhon, Vietnam, 14-20 Aug 2022
  • BLV 2022, J. Serrano , BLV 2022, Brussel, Belgium, 5-8 Sep 2022
  • GDR-InF annual workshop 2022, V. Bertacchi, A. Thaller, L. Polat, R. Leboucher, GDR-InF annual workshop, Lyon, France, 2-4 Nov 2022

2021: 7 talks

  • Phenomenology 2021 Symposium, L. Polat , Phenomenology 2021 Symposium, , indéfini, 24-26 May 2021
  • Flavour Physics from non LHC experiments, J. Serrano , LHCP 2021, Paris, France, 7-12 Jun 2021
  • Anomalies and Precision in the Belle II Era – Workshop, L. Zani , Anomalies and Precision in the Belle II Era – Workshop, Vienna, Austria, 8-9 Sep 2021
  • The 30th International Workshop on Vertex Detectors, R. Leboucher , The 30th International Workshop on Vertex Detectors, Oxford, United Kingdom, 27-30 Sep 2021
  • Precision Electroweak Physics at the CERN Large Hadron Collider, V. Bertacchi , Precision Electroweak Physics at the CERN Large Hadron Collider, Milan, Italy, 5-6 Oct 2021
  • GDR-InF annual workshop 2021, L. Zani , GDR-InF annual workshop, Paris, France, 14-15 Nov 2021
  • GdR-Inf 2021 annual workshop, R. Leboucher , L. Martel, GdR-Inf 2021 annual workshop, Paris, France,

Mémoires

2023: 1 mémoire

  • Search for τμμ+μ\tau^-\to\mu^-\mu^+\mu^- lepton flavour violating decays and measurement of the SVD cluster position resolution at Belle II experiment, R. Leboucher, Aix-Marseille Université, 31 Oct 2023

2022: 1 mémoire

  • Recherche de désintégrations τ→ℓϕτ→ℓϕ violant la saveur leptonique et mesure du taux de fausses traces dans les événements e+e−→τ+τ−e+e−→τ+τ− avec l'expérience Belle II, L. Polat, Aix-Marseille Université, 14 Dec 2022


Complete list (PDF)

February 2024: After a technical break of one year and half, the data taking has restarted at Belle II ! This first 'long shutdown' allowed to upgrade the SuperKEKB accelerator, with the aim of improving the injection and reduce the beam backgrounds, as well as the Belle II experiment that has now a complete vertex detector. The first Run2 collisions took place on the 20th of February 2024. The machine parameters will be tuned to improved the previous world record of instantaneous luminosity, and exceed 10^35/cm2/s.

December 2023:

Belle II obtains the best experimental upper limit on the lepton flavour violating decay τμμμ\tau\to\mu\mu\mu . This result, presented at the TAU 2023 conference (https://indico.cern.ch/event/1303630/contributions/5571690/attachments/2765976/4817916/AlbertoMartini_tau2023.pdf), has been the PhD topic of Robin Leboucher.

March 2023:

New Belle II results presented at Moriond 2023

The Belle II experiment presented 14 new results at the Moriond conference, among which two were obtained by the CPPM team:

  • The measurement of the B->D(*)KKs branching fractions, with a precision improved by a factor 3 for the B- -> D0K0Ks decays and three new decay modes observed. This will allow to improve the simulation and B tagging algorithm. This result was presented by Valerio Bertacchi, post doc at CPPM.
  • The search for the lepton flavour violating decays tau -> ephi and tau ->muphi. This analysis was the subject of Leonard Polat's PhD and was presented by Laura Zani, former post doc of the CPPM team. The statistic used (190 fb-1) does not yet allow to improve the existing limits but this will possibly be achieved with the 424 fb-1 already recorded before the long shutdown.

May 2022:

Organisation of the Belle II face to face tracking workshop, 11-13 May.

October 2021:

Laura Zani has been awarded the first annual Belle II thesis prize, together with Giacomo De Pietro, for her thesis: "Search for an invisible Z’ in μ⁺μ⁻ plus missing energy events at Belle II” (thesis submitted to University of Pisa).

March 2021:

Organisation of first Belle II Masterclass at CPPM.

June 2020:

SuperKEKB reached a peak luminosiy of 2.226 x 103410^{34} cm2^{-2} s1^{-1} , breaking the world record!

March 2020:

The Belle II international collaboration has published its first results in a paper selected as an Editors’ Suggestion in Physical Review Letters The paper reports the first search for a new type of elementary particle that may act as a “portal” between ordinary matter and dark matter, which is understood to make up some 85% of the matter in the universe.

This search has been the thesis work of Laura Zani, who recently joined the CPPM group.

Dark Matter

Dark matter is today one of the main puzzles in fundamental physics. Indeed, its contribution to the total mass of the Universe is 85%, but it can not be explained in the framework of the Standard Model of particle physics. However several candidates exist in theories beyond the Standard Model, amongst which the WIMP (Weakly Interactive Massive Particle) and the axion are two better-motivated candidates than most others. In this context, the CPPM Dark Matter team is deeply involved in the following experiments:

  • DarkSide-20k: second generation experiment for WIMP direct searches. Located 1.4 km underground in the Gran Sasso laboratory in Italy, it is in a prototyping phase and aims to start physics data taking by 2026.
  • MadMax: first generation experiment for axion direct searches, based on a novel concept (dielectric haloscope). It is in an innovative and challenging R&D phase, with different prototypes being tested under magnetic field at CERN between 2022 and 2025.

They both have a strong discovery potential in the next ten years.

Schematic view of the DarkSide-20k experiment composed of the central Time Projection Chamber filled with Underground Argon, the neutron veto and the Faraday cage. The Time Projection Chamber and the veto are equipped with 200 000 Silicon PhotoMultipliers (SiPM). All these components are embedded in a proto-DUNE-like cryostat. - Credit DarkSide-20k experiment
Preliminary baseline design of the Madmax approach, showing the magnet, the booster consisting of the mirror (copper disk at the far left) and the 80 dielectric disks, the focusing mirror and the receiver, consisting of the horn antenna and the cold preamplifier inside a separated cryostat. At the extreme right the final expected signal is shown. - Credit MadMax experiment

Researchers and Research professors

PHD students and post-doctoral fellows

Engineers and Technicians

Since 2010, the most sensitive technology for WIMP direct searches is based on the measurement of the scintillation light from the scattering of a WIMP on a liquid noble atom – argon or xenon. The DarkSide-20k experiment, located 1.4 km underground in the Gran Sasso laboratory in Italy, is the second generation of liquid argon dual phase Time Projection Chambers (TPC). It is in a prototyping phase and aims to start physics data taking by 2026. It will use 50 tons of highly purified argon, allowing a world leading discovery potential for WIMPs. It will be the largest TPC ever built for dark matter searches and a dedicated effort to calibrate its response is obviously a key element of its physics program. To this end, the guide tube system that CPPM will design, build and install at Gran Sasso laboratory will enable the circulation of photon and neutron sources around the DarkSide-20k TPC. We also participate to radon diffusion measurements. The DarkSide experiment is currently under construction.

Schematic view of the DarkSide-20k experiment composed of the central Time Projection Chamber filled with Underground Argon, the neutron veto and the Faraday cage. The Time Projection Chamber and the veto are equipped with 200 000 Silicon PhotoMultipliers (SiPM). All these components are embedded in a proto-DUNE-like cryostat.
Simplified design of the calibration source guide tube system in the DarkSide-20k experiment.
Picture of the DarkSide calibration system mockup at CPPM.
Photograph of the cryostat set-up used for tests of the calibration system at CERN.
Radon diffusion measurement set-up at CPPM used for DarkSide-20k measurements.

MadMax is a first generation experiment for axion direct searches, based on a novel concept (dielectric haloscope). It is the only one capable to explore the axion mass phase space between 40 and 400 μ\mu eV, favored by the theory. Currently in an R&D phase, it will take data with different prototypes between 2022 and 2025, and with the final detector after 2028, with a strong discovery potential. In CPPM, we exploit our recognized expertise in 3-dimensional measurements with micro-meter precision, largely developed for ATLAS pixel detectors. We thus precisely measure the geometry of the dielectric disks, which has to be controlled at the micron level. We are also responsible for the design of the ring structure to hold the disks. Finally, we are responsible for all infrastructures at CERN that are needed to take data with the prototype inside a magnetic field.

Preliminary baseline design of the Madmax approach, showing the magnet, the booster consisting of the mirror (copper disk at the far left) and the 80 dielectric disks, the focusing mirror and the receiver, consisting of the horn antenna and the cold preamplifier inside a separated cryostat. At the extreme right the final expected signal is shown.
3D optical measurement setup in CPPM used for precision measurements of the geometry of the MADMAX disks.
Prototype of the MadMax experiment, which proposes a new approach in the direct search for dark matter in the form of axions. © MadMax Collaboration
Aerial view of the Morpurgo magnet, in red in the foreground, located in the North Hall of CERN. © 2024 CERN
Cryostat (in the center of the magnet), containing a prototype of the MadMaxet experiment allowing measurements to be made at the temperature of liquid helium thanks to the connection with the tank placed in front of the magnet. © 2024 CERN
Test of a prototype of the MadMax experiment in a CERN magnet. © MadMax Collaboration
PhD started in 2022
Subject: Search for axion dark matter using a novel concept with the MADMAX Experiment
Fundings: CNRS
PhD director : Pascal Pralavorio
Co-supervisor: Fabrice Hubaut
PhD started in 2021
Subject: Recherche directe de Matière Noire avec le détecteur DarkSide-20k
Fundings: IPHU
PhD director : Fabrice Hubaut
Co-supervisor: Emmanuel Nezri

Publications Matière Noire

Articles

2024: 1 article

  • Directionality of nuclear recoils in a liquid argon time projection chamber, P. Agnes et al. , DarkSide Collaboration, Eur. Phys. J. C 84 (2024) 24

2023: 7 articles

  • Search for Dark-Matter–Nucleon Interactions via Migdal Effect with DarkSide-50, P. Agnes et al. , DarkSide Collaboration, Phys. Rev. Lett 130 (2023) 101001
  • Search for Dark Matter Particle Interactions with Electron Final States with DarkSide-50, P. Agnes et al. , DarkSide Collaboration, Phys. Rev. Lett 130 (2023) 101002
  • Search for low-mass dark matter WIMPs with 12 ton-day exposure of DarkSide-50, P. Agnes et al. , DarkSide Collaboration, Phys. Rev. D 107 (2023) 063001
  • Sensitivity projections for a dual-phase argon TPC optimized for light dark matter searches through the ionization channel, P. Agnes et al. , Phys. Rev. D 107 (2023) 112006
  • Measurement of isotopic separation of argon with the prototype of the cryogenic distillation plant Aria for dark matter searches, E. Aaron et al. , DarkSide Collaboration, Eur. Phys. J. C 83 (2023) 453
  • Study of cosmogenic activation above ground for the DarkSide-20k experiment, A. Elersich et al. , DarkSide Collaboration, Astropart. Phys. 152 (2023) 102878
  • Search for low mass dark matter in DarkSide-50: the bayesian network approach, P. Agnes et al. , DarkSide Collaboration, Eur. Phys. J. C 83 (2023) 322

2022: 1 article

  • A study of events with photoelectric emission in the DarkSide-50 liquid argon Time Projection Chamber, P. Agnes et al. , DarkSide Collaboration, Astropart. Phys. 140 (2022) 102704

2021: 5 articles

  • SiPM-matrix readout of two-phase argon detectors using electroluminescence in the visible and near infrared range, C. E. Aalseth et al. , DarkSide Collaboration, Eur. Phys. J. C 81 (2021) 153
  • Sensitivity of future liquid argon dark matter search experiments to core-collapse supernova neutrinos, Agnes, P. et al. , DarkSide Collaboration, J. Cosmol. Astropart. P 03 (2021) 043
  • Separating 39Ar{^{39}{Ar} } from 40Ar{^{40}{Ar} } by cryogenic distillation with Aria for dark-matter searches, P. Agnes et al. , DarkSide Collaboration, Eur. Phys. J. C 81 (2021) 359
  • Simulating MADMAX in 3D: Requirements for Dielectric Axion Haloscopes, S. Knirck et al. , MADMAX Collaboration, J. Cosmol. Astropart. P 10 (2021) 034
  • Calibration of the liquid argon ionization response to low energy electronic and nuclear recoils with DarkSide-50, P. Agnes et al. , DarkSide Collaboration, Phys. Rev. D 104 (2021) 082005

2020: 1 article

  • Design and Construction of a New Detector to Measure Ultra-Low Radioactive-Isotope Contamination of Argon, C. E. Aalseth et al. , DarkSide Collaboration, J. Instrum 15 (2020) P02024

Conference proceedings

2023: 1 conference proceeding

  • The simulation of DarkSide-20k calibration, M. Van Uffelen , Proc. Moriond, 57th Rencontres de Moriond, Electroweak Interactions and Unified theories (2023), La Thuile, Italy, 18-25 Mar 2023

2022: 1 conference proceeding

  • The calibration of a direct search for dar matter detector: the TPC of DarkSide-20k, M. Van Uffelen , indéfini, Journées de Rencontres Jeunes Chercheurs (2022), Saint Jean de Monts, France, 23-29 Oct 2022

Reports

2020: 2 reports

  • MADMAX Status Report, S. Beurthey , N. Böhmer, P. Brun, A. Caldwell, L. Chevalier, C. Diaconu , G. Dvali, P. Freire, E. Garutti, C. Gooch, A. Hambarzumjan, S. Heyminck, F. Hubaut , J. Jochum, P. Karst , S. Khan, D. Kittlinger, S. Knirck, M. Kramer, C. Krieger, T. Lasserre, C. Lee, X. Li, A. Lindner, B. Majorovits, M. Matysek, S. Martens, E. Öz, P. Pataguppi, P. Pralavorio , G. Raffelt, J. Redondo, O. Reimann, A. Ringwald, N. Roch, K. Saikawa, J. Schaffran, A. Schmidt, J. Schütte-Engel, A. Sedlak, F. Steffen, L. Shtembari, C. Strandhagen, D. Strom, G. Wieching, arXiv:2003.10894 [physics.ins-det]
  • Usage of the CERN MORPURGO magnet for the MADMAX prototype, S. Beurthey , N. Böhmer, P. Brun, A. Caldwell, L. Chevalier, C. Diaconu , G. Dvali, P. Freire, A. Gardikiotis, E. Garutti, C. Gooch, A. Hambarzumjan, S. Heyminck, F. Hubaut , J. Jochum, P. Karst , S. Khan, D. Kittlinger, S. Knirck, M. Kramer, C. Krieger, T. Lasserre, C. Lee, X. Li, A. Lindner, B. Majorovits, M. Matysek, S. Martens, E. Öz, P. Pataguppi, P. Pralavorio , G. Raffelt, J. Redondo, O. Reimann, A. Ringwald, K. Saikawa, A. Sedlak, L. Shtembari, F. Steffen, C. Strandhagen, D. Strom, A. Schmidt, J. Schütte-Engel, J. Schaffran, G. Wieching, CERN-SPSC-2020-012, SPSC-P-366

Complete list (PDF)
  • June 2023: Foundation of a French-German laboratory for identifying the nature of dark matter
  • March-April 2023: third test run of a MADMAX prototype in the Morpurgo magnet at CERN (21 days)
  • September 2022 : Successful cold test of the DarkSide calibration mockup including the motorisation system
  • Août 2022: World best limits for low mass WIMP search with the DarkSide-50 experiment
  • April 2022 : Tests of the second MADMAX prototype in the Morpurgo magnet at CERN
  • March 2022 : Tests of the first MADMAX prototype in the Morpurgo magnet at CERN
  • September 2021 : Isabelle Wingerter-Seez becomes national scientific responsible of the DarkSide project
  • July 2021 : Successful first cold test at CPPM of the DarkSide calibration mockup
  • April 2021 : Acceptance of the Iphu (Institut de Physique de l'Univers de l'Université d'Aix-Marseille) project on direct dark matter detection with LAM (Laboratoire d'Astrophysique de Marseille), CPT (Centre de Physique Théorique) and CPPM
  • September 2020: the CERN research board approves the use of the Morpurgo magnet for the tests of the MadMax prototype.
  • June 2020 : CPPM officially becomes member of the DarkSide collaboration
  • June 2020 : official creation of the team at CPPM
  • April 2020 : CPPM officially becomes member of the MADMAX collaboration
  • January 2020 : Pierre Karst becomes technical coordinator of the MADMAX collaboration

LHCb

The LHCb experiment is installed at the LHC, the Large Hadron Collider, at CERN, in Geneva.

The purpose of the experiment is to uncover New Physics by performing precision measurements in the decays of beauty and charm hadrons.
The LHCb collaboration has 1650 members from 98 laboratories and universities in 22 countries.

At CPPM, the team designed the muon trigger system for Run1&2 and the 40MHz acquisition boards for Run3 and beyond. We are invloved in the ultra-speed data acquisition system as well as in the Real Time Analysis Project (RTA). We ensure the coordination of the DIRAC project which constitutes the basis of the distributed computing system.

We have played a major role in several key analyses (Bsμ+μB_s\to\mu^+\mu^- , BsJ/ψϕB_s \to J/\psi \phi ) then on several decays involving τ\tau leptons in the final state: B(s)Kττ,Kτμ,ττ,τμB(s) \to K^{\ast} \tau \tau , K \tau \mu, \tau \tau, \tau \mu . We are currently focusing our efforts on some of the modes related to the so-called "charged current flavor anomalies" observed by the LHCb, Belle and BaBar experiments, the combined effects of which show a deviation of about 3.5σ3.5 \sigma from the theoretical predictions. We are specifically studying the semileptonic decays like BDν B \to D^{\ast} \ell \nu , where \ell represents a tau, a muon or an electron. We are studying not only ratios of branching fractions like R(D) R(D^{\ast}) , but also CP violation and angular distributions in these kind of decays.

More information on the public page or on their Twitter and on Facebook.

Carte d´acquisition du système de déclenchement de LHCb © Coll. LHCb, Cern
Vue du détecteur LHCb © Coll. LHCb, Cern

Researchers and Research professors

PHD students and post-doctoral fellows

Engineers and Technicians

PhD started in 2023
Subject: Test de l'universalité leptonique danes les désintégrations semileptoniques de mésons B à LHCb
Fundings: CNRS / ERC Alpaca
PhD director : Olivier Leroy
Co-supervisor: Dorothea Vom Bruch
PhD started in 2022
Subject: Searches for effects beyond the Standard Model in semileptonic B hadron decays at LHCb
Fundings: CNRS et IN2P3
PhD director : Dorothea Vom Bruch
Co-supervisor: Anton Poluektov
Subject: Utilisation carte PCIe40 et développement de la carte PCIe400.
Fundings: CERN
PhD director : Renaud Le Gac
Co-supervisors: Olivier Leroy , Paolo Durante
PhD started in 2021
Subject: Recherche de nouvelle physique dans les transitions B0 en D* tau nu auprès de l'expérience LHCb
Fundings: Contrat doctoral AMU
PhD director : Olivier Leroy
See old PhDs (17)

Publications LHCb

Articles

2024: 25 articles

  • Measurement of Ξc+\Xi_{c}^{+} production in pp Pb collisions at sNN=8.16\sqrt{s_{NN} }=8.16 TeV at LHCb, R. Aaij et al. , LHCb Collaboration, Phys. Rev. C 109 (2024) 044901
  • Improved measurement of CPCP violation parameters in Bs0J/ψK+KB^0_s\to J/\psi K^{+}K^{-} decays in the vicinity of the ϕ(1020)\phi(1020) resonance, R. Aaij et al. , LHCb Collaboration, Phys. Rev. Lett 132 (2024) 051802
  • A search for rare BDμ+μB \rightarrow D \mu^{+} \mu^{-} decays, R. Aaij et al. , LHCb Collaboration, J. High Energy Phys. 02 (2024) 032
  • Observation of Cabibbo-suppressed two-body hadronic decays and precision mass measurement of the Ωc0\Omega_{c}^{0} baryon, R. Aaij et al. , LHCb Collaboration, Phys. Rev. Lett 132 (2024) 081802
  • Measurement of the Z boson production cross-section in pp collisions at s \sqrt{s} = 5.02 TeV, R. Aaij et al. , LHCb Collaboration, J. High Energy Phys. 02 (2024) 070
  • Measurement of the CKM angle γ\gamma in the B0DK0B^0 \rightarrow D K^{*0} channel using self-conjugate DKS0h+hD \rightarrow K^0_{\textrm{S} } h^+ h^- decays, R. Aaij et al. , LHCb Collaboration, Eur. Phys. J. C 84 (2024) 206
  • Measurement of CP violation in B0ψ(+)KS0(π+π)B^0 \to \psi (\to\ell^+\ell^-) K^0_S (\to\pi^+\pi^-) decays, R. Aaij et al. , LHCb Collaboration, Phys. Rev. Lett 132 (2024) 021801
  • Measurement of prompt D+D^{+} and Ds+{D}_s^{+} production in pPb collisions at sNN\sqrt{s_{NN} } = 5.02 TeV, R. Aaij et al. , LHCb Collaboration, J. High Energy Phys. 01 (2024) 070
  • Helium identification with LHCb, R. Aaij et al. , LHCb Collaboration, J. Instrum 19 (2024) P02010
  • Enhanced production of Λb0\Lambda_{b}^{0} baryons in high-multiplicity pppp collisions at s=13\sqrt{s} = 13 TeV, R. Aaij et al. , LHCb Collaboration, Phys. Rev. Lett 132 (2024) 081901
  • Observation of Ξb0Ξc+Ds\Xi_b^0 \rightarrow \Xi_c^+ D_s^- and ΞbΞc0Ds\Xi_b^- \rightarrow \Xi_c^0 D_s^- decays, R. Aaij et al. , LHCb Collaboration, Eur. Phys. J. C 84 (2024) 237
  • Production of η\eta and η\eta' mesons in ppp p and pPbp Pb collisions, R. Aaij et al. , LHCb Collaboration, Phys. Rev. C 109 (2024) 024907
  • Search for CP\textit{CP} violation in the phase space of D0KS0K±πD^{0} \rightarrow K_{S}^{0} K^{\pm} \pi^{\mp} decays with the energy test, R. Aaij et al. , LHCb Collaboration, J. High Energy Phys. 03 (2024) 107
  • Search for CP\textit{CP} violation in the phase space of D0KS0K±πD^{0} \rightarrow K_{S}^{0} K^{\pm} \pi^{\mp} decays with the energy test, R. Aaij et al. , LHCb Collaboration, J. High Energy Phys. 2403 (2024) 107
  • Fraction of χc\chi_c decays in prompt J/ψJ/\psi production measured in pPb collisions at sNN=8.16\sqrt{s_{NN} }=8.16 TeV, R. Aaij et al. , LHCb Collaboration, Phys. Rev. Lett 132 (2024) 102302
  • Fraction of χc\chi_c decays in prompt J/ψJ/\psi production measured in pPbpPb collisions at sNN=8.16TeV\sqrt{s_{NN} }=8.16 \text{TeV} , R. Aaij et al. , LHCb Collaboration, Phys. Rev. Lett 132 (2024) 102302
  • Charge-dependent curvature-bias corrections using a pseudomass method, R. Aaij et al. , LHCb Collaboration, J. Instrum 19 (2024) P03010
  • A model-independent measurement of the CKM angle γ\gamma in partially reconstructed B±Dh±B^{\pm} \rightarrow D^{*} h^{\pm} decays with DKS0h+hD \rightarrow {K}_S^0 h^{+}h^{-} (h = π\pi , K), R. Aaij et al. , LHCb Collaboration, J. High Energy Phys. 02 (2024) 118
  • Measurement of J/ψJ/\psi -pair production in pppp collisions at s=13\sqrt{s}=13 TeV and study of gluon transverse-momentum dependent PDFs, R. Aaij et al. , LHCb Collaboration, J. High Energy Phys. 03 (2024) 088
  • Momentum scale calibration of the LHCb spectrometer, R. Aaij et al. , LHCb Collaboration, J. Instrum 19 (2024) P02008
  • Determination of short- and long-distance contributions in B0K0μ+μB^{0}\to K^{*0}\mu^+\mu^- decays, R. Aaij et al. , LHCb Collaboration, Phys. Rev. D 109 (2024) 052009
  • Determination of short- and long-distance contributions in B0K0μ+μB^{0}\to K^{*0}\mu^+\mu^- decays, R. Aaij et al. , LHCb Collaboration, Phys. Rev. D 109 (2024) 052009
  • Amplitude analysis of the B0K0μ+μB^{0}\to K^{*0}\mu^+\mu^- decay, R. Aaij et al. , LHCb Collaboration, Phys. Rev. Lett 132 (2024) 131801
  • Study of Bc+χcπ+B_c^+ \to \chi_c\pi^+ decays, R. Aaij et al. , LHCb Collaboration, J. High Energy Phys. 02 (2024) 173
  • Visualisation of