Like-sign dimuon asymmetry of B0 meson and LFV in SU(5) SUSY GUT with S4 flavor symmetry

Abstract

The like-sign dimuon charge asymmetry of the $B$ meson, which was reported in the D$Ø$ Collaboration, is studied in the SU(5) SUSY GUT model with $S_4$ flavor symmetry. Additional CP violating effects from the squark sector are discussed in $B_s-{\bar{B}}_s$ mixing process. The predicted like-sign charge asymmetry is in the 2$\sigma$ range of the combined result of D$Ø$ and CDF measurements. Since the SUSY contributions in the quark sector affect to the lepton sector because of the SU(5) GUT relation, two predictions are given in the leptonic processes: (i) both $\mathrm{BR}(\mu \to e\gamma )$ and the electron EDM are close to the present upper bound, (ii) the decay ratios of $\tau$ decays, $\tau \to \mu \gamma$ and $\tau \to e\gamma$, are related to each other via the Cabibbo angle ${\lambda }_c$: ${\rm BR}(τ\to eγ)/{\rm BR}(τ\to μγ)\sime λ_c^2$. These are testable at future experiments.

33 pages, 4 figures, a footnote and references are added

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Cited by in corpus (7)

• Realizing Tri-bimaximal Mixing in Minimal Seesaw Model with S4 Family Symmetry
• Squark flavor mixing and CP asymmetry of neutral $B$ mesons at LHCb
• Fermion masses and mixing with tri-bimaximal in SO(10) with type-I seesaw
• CP violating dimuon charge asymmetry in general left-right models
• SUSY contributions to CP violations in $b\to s$ and $b\to d$ transitions facing on new data
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• Direct CP violation of $b\to s\gamma$ and CP asymmetries of non-leptonic B decays in squark flavor mixing