Initial Scales, Supersymmetric Dark Matter and Variations of Neutralino-Nucleon Cross Sections

Details Initial Scales, Supersymmetric Dark Matter and Variations of Neutralino-Nucleon Cross Sections Initial Scales, Supersymmetric Dark Matter and Variations of Neutralino-Nucleon Cross Sections

2000-06-22

arxiv.org/abs/hep-ph/0006266v2

Phys.Rev. D63 (2001) 025008

Physics

High Energy Physics

High Energy Physics - Phenomenology

Improved references, new comments added

Scientific paper

10.1103/PhysRevD.63.025008

The neutralino-nucleon cross section in the context of the MSSM with universal soft supersymmetry-breaking terms is compared with the limits from dark matter detectors. Our analysis is focussed on the stability of the corresponding cross sections with respect to variations of the initial scale for the running of the soft terms, finding that the smaller the scale is, the larger the cross sections become. For example, by taking $10^{10-12}$ GeV rather than $M_{GUT}$, which is a more sensible choice, in particular in the context of some superstring models, we find extensive regions in the parameter space with cross sections in the range of $10^{-6}$--$10^{-5}$ pb, i.e. where current dark matter experiments are sensitive. For instance, this can be obtained for $\tan\beta\gsim 3$.

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