Decaying Dark Matter can explain the electron/positron excesses

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dc.creatorNardi, Enrico
dc.creatorSannino, Francesco
dc.creatorStrumia, Alessandro
dc.date2008-11-25
dc.date.accessioned2026-07-07T13:17:41Z
dc.date.available2026-07-07T13:17:41Z
dc.descriptionPAMELA and ATIC recently reported excesses in e+ e- cosmic rays. Since the interpretation in terms of DM annihilations was found to be not easily compatible with constraints from photon observations, we consider the DM decay hypothesis and find that it can explain the e+ e- excesses compatibly with all constraints, and can be tested by dedicated HESS observations of the Galactic Ridge. ATIC data indicate a DM mass of about 2 TeV: this mass naturally implies the observed DM abundance relative to ordinary matter if DM is a quasi-stable composite particle with a baryon-like matter asymmetry. Technicolor naturally yields these type of candidates.
dc.description20 pages, 7 figures
dc.identifierhttps://arxiv.org/abs/0811.4153
dc.identifierhttp://arxiv.org/abs/0811.4153
dc.identifierJCAP 0901:043,2009
dc.identifierdoi:10.1088/1475-7516/2009/01/043
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/231195
dc.subjectHigh Energy Physics - Phenomenology
dc.titleDecaying Dark Matter can explain the electron/positron excesses
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