Can R-parity violation lower $\sin 2\beta$?

Abstract

Recent time-dependent CP asymmetry measurements in the $B_d\to J/\psi K_S$ channel by the BaBar and Belle Collaborations yield somewhat lower values of $\sin 2\beta$ compared to the one obtained from the standard model fit. If the inconsistency between these numbers persists with more statistics, this will signal new physics contaminating the $B_d\to J/\psi K_S$ channel, thus disturbing the extraction of $\beta$. We show that the R-parity-violating interactions in supersymmetric theories can provide extra new phases which play a role in significantly reducing the above CP asymmetry, thus explaining why BaBar and Belle report lower values of $\sin 2\beta$. The same couplings also affect the $B_d\to \varphi K_S$ decay rate and asymmetry, explain the $B\to {\eta }^{\prime }K$ anomaly, and predict nonzero CP asymmetry in dominant $B_s$ decays. The scenario will be tested in the ongoing and upcoming B factories.

Latex, 9 pages, 1 PS figure, requires psfig.sty; v2: minor cosmetic changes in text, one reference added; v3: more references and further clarifying remarks to match the version to appear in PLB

References in corpus (4)

• Measurement of CP-violating asymmetries in B0 decays to CP eigenstates
• Measurement of the CP Violation Parameter sin(2phi_1) in B^0_d Meson Decays
• Observation of $B\to \varphi K$ and $B\to \varphi K^{\ast }$
• General Analysis of New Physics in $B\to J/\psi K$

Cited by in corpus (18)

• Phenomenological constraints on broken R parity symmetry in supersymmetry models
• CP Violation in the B System and Relations to $K\to \pi \nu \bar{\nu }$ Decays
• 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
• Constraints on New Physics from $K\to \pi \nu \bar{\nu }$
• 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
• Constraining R-parity violating couplings from B --> PP decays using QCD improved factorization method
• Reevaluating Bounds on Flavor-Changing Neutral Current Parameters in R-parity Conserving and R-parity Violating Supersymmetry from B0 - bar(B0) Mixing
• Charmless Non-Leptonic B Decays and R-parity Violating Supersymmetry
• R-Parity violation in B --> pi+ pi- decay
• Rare Weak Decays and Direct Lepton Number Violating Signals in a Minimal R-Parity Violating Model of Neutrino Mass
• CP violation in decays of the lightest supersymmetric particle with bilinearly broken R parity
• Indian Contributions to LHC Theory
• B decays and Supersymmetry