Search Publications

Axion dark matter from lepton flavor-violating decays

Panci, Paolo; Redigolo, Diego; Schwetz, Thomas +1 more

We propose simple scenarios where lepton flavor-violating couplings generate the observed dark matter abundance through freeze-in of an axion-like particle with mass in the few keV range. Compared to flavor-diagonal freeze-in, this mechanism enhances dark matter stability, softens stellar cooling constraints and improves the experimental sensitivi…

MeV gamma-ray constraints for light dark matter from semi-annihilation

Guo, Jun; Zhu, Bin; Wu, Lei

Exploring the realm of Dark Matter research, Light DM, which has a mass in the range of 1 MeV to 1 GeV, is a fascinating topic both theoretically and experimentally. We assume that the light dark matter is composed of complex scalars and produced from semi-annihilation, which is close to the scale of the MeV Gamma-ray satellite, allowing us to exp…