CP Asymmetry in ${\bar{B}}^0\to K^{-}{\pi }^{+}$ from SUSY Flavor Changing Interactions

Abstract

Recently Babar and Belle collaborations have measured direct CP asymmetry $A_{CP}=-0.114\pm 0.020$ in ${\bar{B}}^0\to K^{-}{\pi }^{+}$. The experimental value is substantially different from QCD factorization prediction. We show that SUSY flavor changing neutral current interaction via gluonic dipole can explain the difference. CP asymmetries in other $B\to K\pi$ decays are predicted to be sizeable. Taking this asymmetry as a constraint, we find that the allowed SUSY parameter space is considerably reduced compared with constraint from $B\to X_s\gamma$ alone. We also find that the allowed time dependent CP asymmetries $S_f$ in ${\bar{B}}^0\to {\bar{K}}^{\ast 0}\gamma \to {\pi }^0{K}_S\gamma$ and ${\bar{B}}^0\to \varphi K_S$ to be large. These predictions are quite different than those predicted in the Standard Model and can be tested in the near future.

RevTeX4, 5 pages, 6 eps figures. Minor changes, conclusions unchanged

References in corpus (7)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Final State Interactions in Hadronic B Decays
• Direct CP Violating Asymmetry in B0 -> K+pi- Decays
• Evidence for Direct CP Violation in B0 -> K+- pi-+ Decays
• Large electroweak penguin contribution in B -> K pi and pi pi decay modes
• Implications of Charmless B Decays with Large Direct CP Violation
• Measurement of Time-dependent CP-violating Asymmetries in B0 -> K*0 gamma (K*0 -> K0_S pi0) Decays

Cited by in corpus (7)

• PQCD Calculation for ${\Lambda }_b\to \Lambda \gamma$ in the Standard Model
• Charmless decays B->pipi, piK and KK in broken SU(3)symmetry
• CP asymmetries and branching ratios of B --> K πin supersymmetric models
• B_c meson rare decays in the light-cone quark model
• Probing Flavor Structure in Supersymmetric Theories
• Supersymmetric contributions to B --> K pi in the view of recent experimental result
• CP violation of the two-body charmless hadronic B decays in the minimal supergravity Model