Direct/indirect detection signatures of nonthermally produced dark matter

Details Direct/indirect detection signatures of nonthermally produced dark matter Direct/indirect detection signatures of nonthermally produced dark matter

2008-07-10

arxiv.org/abs/0807.1634v2

Phys.Rev.D78:063540,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 12 figures; typos corrected, reference added; to appear in PRD

Scientific paper

10.1103/PhysRevD.78.063540

We study direct and indirect detection possibilities of neutralino dark matter produced non-thermally by e.g. the decay of long-lived particles, as is easily implemented in the case of anomaly or mirage mediation models. In this scenario, large self-annihilation cross sections are required to account for the present dark matter abundance, and it leads to significant enhancement of the gamma-ray signature from the Galactic Center and the positron flux from the dark matter annihilation. It is found that GLAST and PAMELA will find the signal or give tight constraints on such nonthermal production scenarios of neutralino dark matter.

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