Nucleon scattering with higgsino and wino cold dark matter

Details Nucleon scattering with higgsino and wino cold dark matter Nucleon scattering with higgsino and wino cold dark matter

2000-11-06

arxiv.org/abs/hep-ph/0011082v2

Phys.Rev. D64 (2001) 015001

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, LaTex, 4 figures, uses feynMF, minor changes made for PRD publication

Scientific paper

10.1103/PhysRevD.64.015001

Neutralinos that are mostly wino or higgsino are shown to be compatible with the recent DAMA annual modulation signal. The nucleon scattering rates for these dark matter candidates are typically an order of magnitude above the oft-considered bino. Although thermal evolution of higgsino and wino number densities in the early universe implies that they are not viable dark matter candidates, non-thermal sources, such as from gravitino or moduli decay in anomaly mediated supersymmetry breaking, suggest that they can be the dominant source of cold dark matter. Their stealthiness at high energy colliders gives even more impetus to analyze nucleon scattering detection methods. We also present calculations for their predicted scattering rate with Germanium detectors, which have yet to see evidence of WIMP scattering.

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