Implications of large CP Violation in B mixing for Supersymmetric Standard Models

Abstract

Following the anomalous like-sign dimuon charge asymmetry measured by the D0 collaboration at the Tevatron collider we discuss the implications of large CP violation in $B_{d,s}$ mixing for Supersymmetric (SUSY) Standard Models, focussing on those models which allow a family symmetry and unification. For the Minimal Supersymmetric Standard Model (MSSM) we show that it is only possible to account for $B_s$ mixing and CP violation at the expense of large squark mixing which would require a new approach to family symmetry models. In order to describe both $B_s$ and $B_d$ mixing and CP violation we are led to consider SUSY models with Higgs fields transforming as triplets under a family symmetry. We describe a realistic such model based on ${\Delta }_{27}$ family symmetry in which tree-level exchange of the second Higgs family predicts $B_s$ and $B_d$ mixing and CP violation in good agreement with a recent global fit, while naturally suppressing flavour and CP violation involving the first and second quark and lepton families.

19 pages, 3 figures, references added, version to appear in JHEP

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• Signals of CP Violation Beyond the MSSM in Higgs and Flavor Physics
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• B Meson Mixing in Effective Theories of Supersymmetric Higgs Bosons
• Neutral Gauge Boson Contributions to the Dimuon Charge Asymmetry in B Decays
• CP Violating Contribution to Delta Gamma in the B_s System from Mixing with a Hidden Pseudoscalar
• The D0 same-charge dimuon asymmetry and possibile new CP violation sources in the $B_s-{\bar{B}}_s$ system
• Triangle Relation of Dark Matter, EDM and CP Violation in B0 Mixing in a Supersymmetric Q6 Model
• Like-sign dimuon charge asymmetry in Randall-Sundurm model
• Large CP Violation in B_s Meson Mixing with EDM constraint in Supersymmetry
• Reevaluating R-parity Violating Supersymmetry Effects in B_s^0-\bar{B}_s^0 Mixing
• Squark flavor mixing and CP asymmetry of neutral $B$ mesons at LHCb
• Dimuon CP Asymmetry in B Decays and Wjj Excess in Two Higgs Doublet Models
• CP violating dimuon charge asymmetry in general left-right models
• Probing the high scale SUSY in CP violations of K, B0 and Bs mesons
• SUSY contributions to CP violations in $b\to s$ and $b\to d$ transitions facing on new data
• Sensitivity of the squark flavor mixing to the CP violation of K, B0 and Bs mesons
• Sensitivity of High-Scale SUSY in Low Energy Hadronic FCNC