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Positrons in Cosmic Rays from Dark Matter Annihilations for Uplifted Higgs Regions in MSSM

Positrons in Cosmic Rays from Dark Matter Annihilations for Uplifted Higgs Regions in MSSM

来源:Arxiv_logoArxiv
英文摘要

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.

Paolo Gondolo、Katherine Freese、Kenji Kadota

10.1103/PhysRevD.81.115006

物理学

Paolo Gondolo,Katherine Freese,Kenji Kadota.Positrons in Cosmic Rays from Dark Matter Annihilations for Uplifted Higgs Regions in MSSM[EB/OL].(2010-03-23)[2025-08-06].https://arxiv.org/abs/1003.4442.点此复制

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