Effects of R-parity violation on direct CP violation in B decays and extraction of $\gamma$

Abstract

In the standard model, direct CP-violating asymmetries for $B^{\pm }\to {\pi }^{\pm }K$ are roughly 2% based on perturbative calculation. Rescattering effects might enhance it to at most (20-25)%. We show that lepton-number-violating couplings in supersymmetric models without R-parity are capable of inducing as large as 100% CP asymmetry in this channel. Such effects drastically modify the allowed range of the CKM parameter $\gamma$ arising from the combinations of the observed charged and neutral B decays in the $\pi K$ modes. With a multichannel analysis in B decays, one can either discover this exciting new physics, or significantly improve the existing constraints on it.

Latex, 5 pages; minor changes, to appear in Phys Rev Lett

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Cited by in corpus (25)

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• Explaining the Lepton Non-universality at the LHCb and CMS from a Unified Framework
• Polarizations in decays B_{u,d}\to VV and possible implications for R-parity violating SUSY
• Simultaneous solution to B --> phi K CP Asymmetry and B --> eta(prime) K, eta K^* branching ratio anomalies from R-parity violation
• Probe R-parity Violating Supersymmetry Effects in $B\to K^{(\ast )}{\ell }^{+}{\ell }^{-}$ and $B_s\to {\ell }^{+}{\ell }^{-}$ Decays
• The rare decays $B_u^{+}\to {\pi }^{+}{\ell }^{+}{\ell }^{-}$, ${\rho }^{+}{\ell }^{+}{\ell }^{-}$ and $B_d^0\to {\ell }^{+}{\ell }^{-}$ in the R-parity violating supersymmetry
• Constraints on R-parity violating supersymmetry from neutral meson mixing
• $B_s-\overline{B_s}$ mixing, B decays and R-parity violating supersymmetry
• The puzzles in $B\to \pi \pi$ and $\pi K$ decays: possible implications for R-parity violating supersymmetry
• P,T-violating electron-nucleon interactions in the R-parity violating minimal supersymmetric standard model
• Reevaluating Bounds on Flavor-Changing Neutral Current Parameters in R-parity Conserving and R-parity Violating Supersymmetry from B0 - bar(B0) Mixing
• A new mechanism of neutrino mass generation in the NMSSM with broken lepton number
• Study of the exclusive $b\to u{\ell }^{-}{\bar{\nu }}_{\ell }$ decays in the MSSM with and without R-parity violation
• CP Asymmetries in Radiative B Decays with R-parity Violation
• R-Parity violation in B --> pi+ pi- decay
• Large CP violation in radiative B decays in supersymmetry without R-parity
• Studying Double Charm Decays of B_{u,d} and B_{s} Mesons in the MSSM with R-parity Violation
• Does CPT violation affect the B_d meson life times and decay asymmetries?
• Rare Weak Decays and Direct Lepton Number Violating Signals in a Minimal R-Parity Violating Model of Neutrino Mass
• A simultaneous explanation of the large phase in B_s-\bar B_s mixing and B --> ππ/ πK puzzles in R-parity violating supersymmetry
• CP violation in decays of the lightest supersymmetric particle with bilinearly broken R parity
• Indian Contributions to LHC Theory
• New Physics Effects From B Meson Decays