CMSSM Spectroscopy in light of PAMELA and ATIC

Details CMSSM Spectroscopy in light of PAMELA and ATIC CMSSM Spectroscopy in light of PAMELA and ATIC

2009-01-08

arxiv.org/abs/0901.0923v3

Phys.Rev.D79:055019,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 8 figures, 2 tables; References added; color coding fixed in some figures

Scientific paper

10.1103/PhysRevD.79.055019

Dark matter neutralinos in the constrained minimal supersymmetric model (CMSSM) may account for the recent cosmic ray electron and positron observations reported by the PAMELA and ATIC experiments either through self annihilation or via decay. However, to achieve this, both scenarios require new physics beyond the 'standard' CMSSM, and a unified explanation of the two experiments suggests a neutralino mass of order 700 GeV - 2 TeV. A relatively light neutralino with mass around 100 GeV (300 GeV) can accomodate the PAMELA but not the ATIC observations based on a model of annihilating (decaying) neutralinos. We study the implications of these scenarios for Higgs and sparticle spectroscopy in the CMSSM and highlight some benchmark points. An estimate of neutrino flux expected from the annihilating and decaying neutralino scenarios is provided.

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