Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2008-10-10
Phys.Rev.D79:063514,2009; Erratum-ibid.D80:029907,2009
Physics
High Energy Physics
High Energy Physics - Phenomenology
5 pages, 4 figures; added references and discussion; included PAMELA data; to appear in PRD; corrected the electromagnetic-emi
Scientific paper
10.1103/PhysRevD.79.063514
The positron excess observed by the PAMELA experiment may come from dark matter annihilation, if the annihilation cross section is large enough. We show that the dark matter annihilation scenarios to explain the positron excess may also be compatible with the discrepancy of the cosmic lithium abundances between theory and observations. The wino-like neutralino in the supersymmetric standard model is a good example for it. This scenario may be confirmed by Fermi satellite experiment.
Hisano Junji
Kawasaki Masahiro
Kohri Kazunori
Nakayama Kazunori
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