Hidden sector dark matter: direct detection and cosmic ray anomalies

          @misc{ scivideos_PIRSA:10100056,
            doi = {10.48660/10100056},
            url = {https://pirsa.org/10100056},
            author = {Cline, James},
            keywords = {Cosmology},
            language = {en},
            title = {Hidden sector dark matter: direct detection and cosmic ray anomalies},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2010},
            month = {oct},
            note = {PIRSA:10100056 see, \url{https://scivideos.org/index.php/pirsa/10100056}}
          }
          

Abstract

If dark matter consists of a multiplet with small mass splittings, it is possible to simultaneously account for DAMA/CoGeNT hints of direct detection and the INTEGRAL 511 keV gamma ray excess from the galactic center; such dark matter must be in the 4-12 GeV mass range. I present scenarios where the DM transforms under a hidden SU(2) that can account for these observations. These models can be tested in low-energy beam dump experiments, like APEX. To explain PAMELA/Fermi excess electrons from dark matter annihilations, heavier TeV scale DM is required. I will present new more stringent constraints from Fermi gamma ray data that tend to rule out such models. However we find a loophole: DM annihilations in a nearby DM subhalo, between us and the galactic center, could provide the excess leptons while respecting gamma ray constraints.