Annihilation signals from asymmetric dark matter

• DOI: 10.1007/jhep07(2014)049
• Publication Date: 2014-07-12T03:49:45Z
• Authors: Edward Hardy; Robert Lasenby; James Unwin
• Keywords: Annihilation

In the simplest models of asymmetric dark matter (ADM) annihilation signals are not expected, since DM is non-self-conjugate and relic density anti-DM negligible. We investigate a new class in which symmetric component, 'low-mass' 1-10 GeV regime favoured for linking baryon asymmetries, repopulated through decays. find that, without significant velocity dependence cross section, observational constraints generally force these decays to be (cosmologically) slow. These late can give rise gamma-ray signal morphologies differing from usual profiles. A distinctive feature such that may absent dwarf spheroidal galaxies.