1205.5918 (Isabella Masina et al.)

Gamma Ray Constraints on Flavor Violating Asymmetric Dark Matter    [PDF]

Isabella Masina, Paolo Panci, Francesco Sannino

We show that it is possible to use cosmic rays to constrain asymmetric Dark Matter models violating the lepton flavor symmetry. This is possible if we require the models to explain the anomalies in the charged cosmic rays measured by PAMELA, FERMI and HESS. We first perform combined fits to the cosmic rays anomalies and find that the current data allow for the possibility of flavor violation asymmetric Dark Matter. We then determine the constraints coming from the measurement of the isotropic gamma-ray background by FERMI for a complete set of lepton flavor violating primary modes and over a range of DM masses from 100 GeV to 10 TeV. We find that FERMI constraints rule out the flavor violating asymmetric Dark Matter interpretation of the charged cosmic ray anomalies.

View original: http://arxiv.org/abs/1205.5918