Journal Club: Generating X-ray lines from annihilating dark matter

by Lucien Heurtier

Wednesday 14 May 2014, 12:00 → 13:00 Europe/Berlin

semiar room 2, building 2A (DESY Hamburg)

In this journal club I will present our last paper "Generating X-ray lines from annihilating dark matter" in which we proposed different scenarios where a keV dark matter annihilates to produce a monochromatic signal. The process is generated through the exchange of a light scalar of mass of order 300 keV - 50 MeV coupling to photon through loops or higher dimensional operators. For natural values of the couplings and scales, the model can generate a gamma-ray line which can fit with the recently identified 3.5 keV X-ray line.