Experimental Constraints on the Neutralino-Nucleon Cross Section

Details Experimental Constraints on the Neutralino-Nucleon Cross Section Experimental Constraints on the Neutralino-Nucleon Cross Section

2002-04-23

arxiv.org/abs/hep-ph/0204271v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

References added, bsgamma upper bound improved, results unchanged, Talk given at Corfu Summer Institute on Elementary Particle

Scientific paper

In the light of recent experimental results for the direct detection of dark matter, we analyze in the framework of SUGRA the value of the neutralino-nucleon cross section. We study how this value is modified when the usual assumptions of universal soft terms and GUT scale are relaxed. In particular we consider scenarios with non-universal scalar and gaugino masses and scenarios with intermediate unification scale. We also study superstring constructions with D-branes, where a combination of the above two scenarios arises naturally. In the analysis we take into account the most recent experimental constraints, such as the lower bound on the Higgs mass, the $b\to s\gamma$ branching ratio, and the muon $g-2$.

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