Neutralino-nucleus elastic cross section in the minimal supersymmetric standard model with explicit CP violation

S. Y. Choi, Seong Chan Park, J. H. Jang, H. S. Song

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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 spin-dependent and spin-independent neutralino-nucleus scattering cross section for three nucleus 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.

Original languageEnglish
Article number015006
Pages (from-to)150061-1500612
Number of pages1350552
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume64
Issue number1
Publication statusPublished - 2001 Aug 29

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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