Orateur
Luc Darmé
(IP2I - CNRS)
Description
Cosmic ray atmospheric showers provide an effective environment for the production of MeV-scale dark sector particles. From a simple light dark matter example based on a dark photon mediator, we will show that when available, the resonant annihilation of positrons from the shower on atmospheric electrons is the dominant production mechanism by more than an order of magnitude. Updated constraints from kilotons neutrino experiments and xenon-based direct detection experiments will be consequently presented.
