TY - JOUR
T1 - Positron and gamma-ray signatures of dark matter annihilation and big-bang nucleosynthesis
AU - Hisano, Junji
AU - Kawasaki, Masahiro
AU - Kohri, Kazunori
AU - Nakayama, Kazunori
PY - 2009/3/2
Y1 - 2009/3/2
N2 - 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 winolike neutralino in the supersymmetric standard model is a good example for it. This scenario may be confirmed by Fermi satellite experiments.
AB - 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 winolike neutralino in the supersymmetric standard model is a good example for it. This scenario may be confirmed by Fermi satellite experiments.
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U2 - 10.1103/PhysRevD.79.063514
DO - 10.1103/PhysRevD.79.063514
M3 - Article
AN - SCOPUS:64149126750
SN - 1550-7998
VL - 79
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 6
M1 - 063514
ER -