Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-03-23
Phys. Rev. D 81 (2010) 115006
Physics
High Energy Physics
High Energy Physics - Phenomenology
11 pages, 9 figures
Scientific paper
We point out that there are regions in the MSSM parameter space which successfully provide a dark matter (DM) annihilation explanation for observed positron excess (e.g. PAMELA), while still remaining in agreement with all other data sets. Such regions (e.g. the uplifted Higgs region) can realize an enhanced neutralino DM annihilation dominantly into leptons via a Breit-Wigner resonance through the CP-odd Higgs channel. Such regions can give the proper thermal relic DM abundance, and the DM annihilation products are compatible with current antiproton and gamma ray observations. This scenario can succeed without introducing any additional degrees of freedom beyond those already in the MSSM.
Freese Katherine
Gondolo Paolo
Kadota Kenji
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