Positron and gamma-ray signatures of dark matter annihilation and big-bang nucleosynthesis

Junji Hisano, Masahiro Kawasaki, Kazunori Kohri, and Kazunori Nakayama

Phys. Rev. D 79, 063514 – Published 17 March 2009; Erratum Phys. Rev. D 80, 029907 (2009)

Abstract

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.

Received 21 October 2008

DOI:https://doi.org/10.1103/PhysRevD.79.063514

Erratum

Erratum: Positron and gamma-ray signatures of dark matter annihilation and big-bang nucleosynthesis [Phys. Rev. D 79, 063514 (2009)]

Junji Hisano, Masahiro Kawasaki, Kazunori Kohri, and Kazunori Nakayama

Phys. Rev. D 80, 029907 (2009)

Authors & Affiliations

Junji Hisano^1,2, Masahiro Kawasaki^1,2, Kazunori Kohri³, and Kazunori Nakayama¹

¹Institute for Cosmic Ray Research, University of Tokyo, Kashiwa 277-8582, Japan
²Institute for the Physics and Mathematics of the Universe, University of Tokyo, Kashiwa 277-8568, Japan
³Physics Department, Lancaster University, Lancaster LA1 4YB, United Kingdom

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Vol. 79, Iss. 6 — 15 March 2009

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covering particles, fields, gravitation, and cosmology