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Relic density and elastic scattering cross sections of the neutralino in the MSSM with CP-violating phases

We study the neutralino relic density and the neutralino-proton elastic scattering cross sections in the minimal supersymmetric standard model (MSSM) with CP-violating phases. We include all the final states to the neutralino pair annihilation cross section at the tree level, taking into account the mixing between the CP-even and CP-odd neutral Higgs fields. We show that variations of the relic density and the elastic scattering cross sections with the CP-violating phases are significant. In particular, interferences between the major contributions in the neutralino annihilation cross section can cause considerable enhancement of the relic density.

preprint2004arXivOpen access
Takeshi NiheiMasaki Sasagawa
hep-ph
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Takeshi NiheiMasaki Sasagawa

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