Bounds on dark matter interpretation of Fermi-LAT GeV excess
作者： Kyoungchul Kong , Jong-Chul Park
DOI: 10.1016/J.NUCLPHYSB.2014.09.014
关键词:
摘要: Abstract Annihilation of light dark matter m DM ≈ ( 10 – 40 ) GeV into the Standard Model fermions has been suggested as a possible origin gamma-ray excess at energies in Fermi-LAT data. In this paper, we examine model-independent signatures such models other experiments AMS-02, colliders, and cosmic microwave background (CMB) measurements. We point out that first generation fermion final states is disfavored by existing experimental Currently AMS-02 positron measurements provide stringent bounds on cross sections annihilation leptonic states, e + − state severe tension with constraint, if not ruled out. The channel will be complementarily verified an early stage ILC future CMB Light quark q ¯ are relatively strongly constrained LHC direct detection even though these model-dependent. Dark signals from annihilations channels would antiproton data which released very near future. optimistic case, diffuse radio emission nearby galaxy (clusters) galactic center might another hint or limit annihilation.
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