Studying of Bs --> K(*)-pi+, K(*)-rho+ decays within supersymmetry

Abstract

Recent results from CDF Collaboration favor a large CP asymmetry in $B_s\to K^{-}{\pi }^{+}$ decay, while the Standard Model prediction is very small. Moreover, the measurement of its branching ratio is lower than the Standard Model prediction based on the QCD factorization. We compute the gluino-mediated supersymmetry contributions to $B_s\to K^{(\ast )-}{\pi }^{+}$,$K^{(\ast )-}{\rho }^{+}$ decays in the frame of the mass insertion method, and find that for $\frac{m_{\tilde{g}}^2}{m_{\tilde{q}}^2}\le 2$, the theoretical predictions including the LR and RL mass insertion contributions are compatible with the measurements of $B_s\to K^{-}{\pi }^{+}$ decay and $B^0-{\bar{B}}^0$ mixing within $2\sigma$ ranges. Using the constrained LR and RL mass insertion parameter spaces, we explore the supersymmetry mass insertion effects on the branching ratios, the direct CP asymmetries and the polarization fractions in $B_s\to K^{\ast -}{\pi }^{+},K^{-}{\rho }^{+},K^{\ast -}{\rho }^{+}$ decays. We find the constrained LR and RL insertions can provide sizable contributions to the branching ratios of $B_s\to K^{\ast -}{\pi }^{+}$,$K^{(\ast )-}{\rho }^{+}$ as well as the direct CP asymmetry and the longitudinal polarization of $B_s\to K^{\ast -}{\rho }^{+}$ decay without conflict with all related data within $2\sigma$ ranges. Near future experiments at Fermi Lab and CERN LHC-b can test our predictions and shrink/reveal the mass insertion parameter spaces.

27 pages, 8 figures

References in corpus (9)

• Charmless non-leptonic B_s decays to PP, PV and VV final states in the pQCD approach
• Branching fractions, polarisation and asymmetries of B -> VV decays
• Anatomy and Phenomenology of FCNC and CPV Effects in SUSY Theories
• Averages of b-hadron and c-hadron Properties at the End of 2007
• QCD Factorization for Charmless Hadronic B_s Decays Revisited
• B, Bs -> K form factors: an update of light-cone sum rule results
• New physics in $B\to \pi \pi$ and $B\to \pi K$ decays
• B_s\to K^{(*)-}K^{(*)+}, K^{(*)-}π^{+}, K^{(*)-}ρ^{+} decays in R-parity violating supersymmetry
• The B -> pi pi,pi K Puzzles in the Light of New Data: Implications for the Standard Model, New Physics and Rare Decays

Cited by in corpus (4)

• The Effects of a Family Non-universal Z' Boson in the \bar{B}_s->πK, πK*, ρK Decays and B_d-\bar{B_d} mixing
• Charmless $B_s\to PP,PV,VV$ Decays Based on the six-quark Effective Hamiltonian with Strong Phase Effects II
• Studying of B_s^0-\bar{B}_s^0 mixing and B_{s}\to K^{(*)-}K^{(*)+} decays within supersymmetry
• Charmless $B\to PP,PV,VV$ Decays Based on the six-quark Effective Hamiltonian with Strong Phase Effects