Decaying dark matter can explain the e? excesses

By E. Nardi, Francesco Sannino, Alessandro Strumia. 2008

187 citations recorded by the source corpus.

PAMELA and ATIC recently reported excesses in 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± 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.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/efd49afc87c121ee8878c3cdd69b16e83c53ecbd

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In Nuclear and High Energy Physics

Citations in the corpus

Accidental composite dark matter (2015, background): “In the first case the lifetime is consistent with the present experimental bound from indirect searches [26, 27]”
Fundamental composite dynamics: A review (2020, methodology): “This property of the Technicolor vacuum has been used extensively for dark matter model building [107, 108, 109, 58, 110, 53, 111] and it is supported also by recent pioneering lattice investigations [64, 54, 65].”