Neutralino-Nucleus Elastic Cross Section in the Minimal Supersymmetric Standard Model with Explicit CP Violation

Abstract

We study the elastic scattering of the lightest neutralino with a nucleus in the framework of the minimal supersymmetric standard model (MSSM) with explicit flavor preserving CP violation, including the one-loop CP-violating neutral Higgs-boson mixing effects induced dominantly by the CP phases in the top and bottom (s)quark sectors. We construct the most general form of the effective Lagrangian for the neutralino-nucleus scattering in the limit of vanishing momentum transfers and then we perform a comprehensive analysis of the effects of the complex CP phases on the mass spectra of the lightest neutralino, neutral Higgs bosons and top squarks, and on the the spin-dependent and spin-independent neutralino-nucleus scattering cross section for three neucleus targets F, Si and Ge. The CP phases can reduce or enhance the neutralino-nucleus cross sections significantly, depending on the values of the real parameters in the MSSM.

LaTex file of 26 pages with 6 eps figures

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• Pseudo-Dirac Bino Dark Matter
• Neutralino Dark Matter in the USSM
• Relic density and elastic scattering cross sections of the neutralino in the MSSM with CP-violating phases
• The Interplay Between Collider Searches For Supersymmetric Higgs Bosons and Direct Dark Matter Experiments
• Muon anomalous magnetic moment, $B\to X_s\gamma$ and dark matter detection in the string models with dilaton domination
• Higgs Phenomenology with CPsuperH
• Heavy Higgs Resonances for the Neutralino Relic Density in the Higgs Decoupling Limit of the CP--noninvariant Minimal Supersymmetric Standard Model
• Neutralino relic density from ILC measurements in the CPV MSSM
• Electric dipole moments and dark matter in a CP violating MSSM
• Phenomenological Aspects of the $E_6$SSM