Kubo, Jisuke and Lenz, Alexander (2010) Large loop effects of extra supersymmetric Higgs doublets to CP violation in B-0 mixing. PHYSICAL REVIEW D, 82 (7): 075001. ISSN 2470-0010, 2470-0029
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We consider more than one pair of SU(2)(L) doublet Higgs supermultiplets in a generic supersymmetric extension of the standard model, and calculate their one-loop contributions to the soft mass insertions delta(LL) etc. We find that, if large supersymmetry breaking in this sector is realized, the loop effects can give rise to large contributions to the soft mass insertions, meaning that they can generate large flavor-changing neutral currents and CP violations. We apply our result to a recently proposed model based on the discrete Q6 family group, and calculate the nondiagonal matrix element M-12 of the neutral meson systems. We focus our attention on the extra phases phi(Delta)(ds) in B-d,B-s mixing and flavor-specific CP asymmetries a(sl)(d,s) in neutral B decays and obtain values that can be about 1 order of magnitude larger than the standard model predictions. Our final results are comparable with the recent experimental observations at D0 and CDF, but they are still about a factor of 5 smaller than the recently measured dimuon asymmetry from D0.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | DISCRETE FAMILY SYMMETRY; SUSY GAUGE-THEORIES; FLAVOR SYMMETRY; STANDARD MODEL; B-DECAYS; LIFETIME DIFFERENCE; LEADING LOGARITHMS; FERMION MASSES; BETA-FUNCTION; UNIFICATION; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 09 Jul 2020 13:11 |
| Last Modified: | 09 Jul 2020 13:11 |
| URI: | https://pred.uni-regensburg.de/id/eprint/24131 |
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