$B\to K^{\ast }{\ell }^{+}{\ell }^{-}$ Forward-backward Asymmetry and New Physics

Abstract

The forward-backward asymmetry ${\mathcal{A}}_{\mathrm{FB}}$ in $B\to K^{\ast }{\ell }^{+}{\ell }^{-}$ decay is a sensitive probe of New Physics. Previous studies have focused on the sensitivity in the position of the zero. However, the short distance effective couplings are in principle complex, as illustrated by $B\to \rho {\ell }^{+}{\ell }^{-}$ decay within the Standard Model. Allowing the effective couplings to be complex, but keeping the $B\to K^{\ast }\gamma$ and $K^{\ast }{\ell }^{+}{\ell }^{-}$ rate constraints, we find the landscape for ${\mathcal{A}}_{\mathrm{FB}}(B\to K^{\ast }{\ell }^{+}{\ell }^{-})$ to be far richer than from entertaining just sign flips, which can be explored by future high statistics experiments.

arXiv commentRevTex 4 pages including 5 eps figures; Minor changes made, references added

References in corpus (24)

• The Cosmological Parameters 2006
• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• B_{d,s}->rho, omega, K*, phi Decay Form Factors from Light-Cone Sum Rules Revisited
• Systematic approach to exclusive B ->V l^+l^-, V gamma decays
• A Comparative Study of the Decays $B\to (K,K^{\ast }){\ell }^{+}{\ell }^{-}$ in Standard Model and Supersymmetric Theories
• Four Generations and Higgs Physics
• Improved Model-Independent Analysis of Semileptonic and Radiative Rare B Decays
• Phenomenology of non-standard Z couplings in exclusive semileptonic b -> s transitions
• Measurements of branching fractions, rate asymmetries, and angular distributions in the rare decays B --> Kl+l- and B --> K*l+l-
• Short Distance Coefficients and the Vanishing of the Lepton Asymmetry in $B\to V{\ell }^{+}{\ell }^{-}$
• Difference in B^+ and B^0 Direct CP Asymmetry as Effect of a Fourth Generation
• Determining the sign of the b -> s gamma amplitude
• Large Time-dependent CP Violation in B_s^0 System and Finite D^0-D^0bar Mass Difference in Four Generation Standard Mode
• Measurement of Forward-Backward Asymmetry and Wilson Coefficients in $B\to K^{\ast }{\ell }^{+}{\ell }^{-}$
• NNLL corrections to the angular distribution and to the forward-backward asymmetries in b -> X_s l+ l-
• A Model Independent Analysis of the Rare B Decay B -> X_s l^+ l^-
• Fourth Generation CP Violation Effect on B -> K pi, phi K and rho K in NLO PQCD
• A Systematic Analysis of the Exclusive B -> K^* l^+ l^- Decay
• Effect of Fourth Generation CP Phase on b\to s Transitions
• Looking for Novel CP-Violating Effects in B->K^*l^+l^-
• Extracting short distance information from b -> s l+ l- effectively
• CP Violation in the Exclusive Decays B -> pi e^+e^- and B -> rho e^+e^-
• Flavour-Conserving CP Phases in Supersymmetry and Implications for Exclusive B Decays
• Lepton polarization asymmetries for $B\to K^{\ast }{\ell }^{+}{\ell }^{-}$: A Model Independent approach

Cited by in corpus (17)

• Measurement of the Differential Branching Fraction and Forward-Backword Asymmetry for B->K(*)l+l-
• Angular analysis of the decay B0 to K*0 mu mu from pp collisions at sqrt(s) = 8 TeV
• Measurement of angular parameters from the decay ${\mathrm{B}}^0\to {\mathrm{K}}^{\ast 0}{\mu }^{+}{\mu }^{-}$ in proton-proton collisions at $\sqrt{s}=$ 8 TeV
• On transverse asymmetries in B --> K* l+l-
• Angular Distributions in the Decays B -> K* l+l-
• SM with four generations: Selected implications for rare B and K decays
• New Physics in b -> s mu+ mu-: CP-Conserving Observables
• Angular analysis and branching fraction measurement of the decay B0 to K*0 mu+ mu-
• Impact of $B\to K_0^{\ast }{\ell }^{+}{\ell }^{-}$ on the New Physics search in $B\to K^{\ast }{\ell }^{+}{\ell }^{-}$ decay
• New-physics contributions to the forward-backward asymmetry in B -> K* mu+ mu-
• Measurement of Angular Asymmetries in the Decays B->K*l+l-
• Flavor and CP Violation with Fourth Generations Revisited
• $B\to K^{\ast }{l}^{+}{l}^{-}$, $K{l}^{+}{l}^{-}$ decays in a family non-universal $Z^{\prime }$ model
• Study of $B\to K^{(\ast )}{\ell }^{+}{\ell }^{-}$ Decays in the Family Non-universal $Z^{\prime }$ Models
• Study of Bs-> ϕl^+ l^-$ Decay in a Single Universal Extra Dimension
• Impact of $Z^{\prime }$ and UED parameters on different asymmetries in $B_s\to \varphi {\ell }^{+}{\ell }^{-}$ decays
• Search for TeV Scale Physics in Heavy Flavour Decays