TPPC weekly seminar: Anastasiia Filimonova

Wednesday 27 Jan 2021, 14:00 → 15:00 Europe/London

Speaker:  Anastasiia Filimonova, NIKHEF

Title: Long-lived particles: connecting early universe dynamics to collider signatures

Abstract:An appealing hypothesis of thermally produced dark matter frequently meets strong constraints from direct detection. Consequently, dark sectors with small couplings to the Standard Model are experimentally motivated. In the very weakly-interacting regime, new processes, such as co-scattering, set the relic abundance. A distinctive feature of this regime is the suppressed decays of heavy dark states. Interestingly, they appear to be long-lived also at collider scales, leading to signatures with displaced particles. Using higgs portal as a benchmark scenario, I will discuss the phenomenology of this correspondence between decoupling regimes and experimental signals. I will also briefly talk about the potential of searches for displaced soft particles at the LHC and Belle II.

 

Slides Filimonova_LLPs_seminar_Kings-College .pdf