Constraints from Accelerator Experiments on the Elastic Scattering of CMSSM Dark Matter
arXiv:hep-ph/0111064 · doi:10.1016/S0370-2693(02)01553-8
Abstract
We explore the allowed ranges of cross sections for the elastic scattering of neutralinos χon nucleons in the constrained minimal supersymmetric extension of the Standard Model (CMSSM), in which scalar and gaugino masses are each assumed to be universal at some input grand unification scale. We extend previous calculations to larger \tan βand investigate the limits imposed by the recent LEP lower limit on the mass of the Higgs boson and by b \to s γ, and those suggested by g_μ- 2. The Higgs limit and b \to s γprovide upper limits on the cross section, particularly at small and large \tan β, respectively, and the value of g_μ- 2 suggests a lower limit on the cross section for μ> 0. The spin-independent nucleon cross section is restricted to the range 6 \times 10^{-8} pb > σ_{SI} > 2 \times 10^{-10} pb for μ> 0, and the spin-dependent nucleon cross section to the range 10^{-5} pb > σ_{SD} > 2 \times 10^{-7} pb. Lower values are allowed if μ<0.
15 pages, latex, 18 eps figures
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