The Standard Model successfully describes the fundamental interactions of elementary particles up to TeV energies. Nonetheless, we know there is new physics beyond, although the energy scale at which it becomes manifest is unknown. The common belief is that new phenomena arise only at TeV energies or higher. However, much lighter particles could still be hiding due to their very weak interactions with known ones. Ultra-high precision measurements in atomic and molecular spectroscopy offer an interesting set of probes for such scenarios, complementing the efforts invested at high-energy colliders. In this presentation, we will explore two different approaches based on hydrogen spectroscopy and atomic clocks.

Document to collect questions:

https://docs.google.com/document/d/1_NEaFIEQfeKQCADn3IKZEznWSi6OYO5WGSslyQbe5-A/edit