Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-12-29
Phys.Rev. D64 (2001) 015006
Physics
High Energy Physics
High Energy Physics - Phenomenology
LaTex file of 26 pages with 6 eps figures
Scientific paper
10.1103/PhysRevD.64.015006
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.
Choi Yong-Sang
Jang Hee Jeong
Park Seong Chan
Song Hee Sung
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