Correlation between direct dark matter detection andBr(Bs→μμ)with a large phase ofBs−B¯smixing

2009/07/28 by Bhaskar Dutta, Yukihiro Mimura, Yudi Santoso
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Neutrino Physics Research #Particle physics theoretical and experimental studies #hep-ph

paper · pdf · doi:10.1103/physrevd.80.095005

published as Phys.Rev.D80:095005,2009 · 19 pages, 8 figures

arxiv created 2009/07/28 · openalex publication_date 2009/11/05 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We combine the analyses for flavor changing neutral current processes and dark matter solutions in minimal-type supersymmetric grand unified theory models, SO(10) and SU(5), with a large B_s\mathrm\text\ensuremath-B_s mixing phase and large tan\ensuremathβ. For large tan\ensuremathβ, the double-penguin diagram dominates the supersymmetry contribution to the B_s\mathrm\text\ensuremath-B_s mixing amplitude. Also, the Br(B_s\ensuremath→\ensuremathμ\ensuremathμ) constraint becomes important as it grows as tan⁶\ensuremathβ, although it can still be suppressed by a large pseudoscalar Higgs mass m_A. We investigate the correlation between B_s\ensuremath→\ensuremathμ\ensuremathμ and the dark matter direct detection cross section through their dependence on m_A. In the minimal-type of SU(5) with type I seesaw, the large mixing in neutrino Dirac couplings results in a large lepton flavor violating decay process \ensuremathτ\ensuremath→\ensuremathμ\ensuremathγ, which in turn sets the upper bound on m_A. In the SO(10) case, the large mixing can be chosen to be in the Majorana couplings instead, and the constraint from Br(\ensuremathτ\ensuremath→\ensuremathμ\ensuremathγ) can be avoided. The heavy Higgs funnel region turns out to be an interesting possibility in both cases and the direct dark matter detection should be possible in the near future in these scenarios.

Citations

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