The sensitivity of the zero position of the forward--backward asymmetry to new physics effects in the B -> K^\ast μ^+ μ^- decay

Abstract

Starting with the most general effective Hamiltonian comprising scalar and vector operators beyond the standard model, we discuss the impact of various operators on the zero of the forward--backward asymmetry in the dileptonic B decay B -> K^\ast μ^+ μ^-. We find that, zero of the asymmetry is highly sensitive to the sign and size of the vector--vector operators and opposite chirality counterparts of the usual operators. The scalar--scalar four--fermion operators, on the other hand, have mild effect on the zero of the asymmetry. Our results are expected to be checked in the near future experiments.

16 pp, 6 ps figs

References in corpus (11)

• Observation of Large CP Violation in the Neutral B Meson System
• Observation of CP violation in the B^0 meson system
• Systematic approach to exclusive B ->V l^+l^-, V gamma decays
• Branching Fraction and Photon Energy Spectrum b -> s gamma
• A Measurement of the Branching Fraction for the Inclusive B --> X(s) gamma Decays with the Belle Detector
• The Radiative Decays B -> V gamma at Next-to-Leading Order in QCD
• Observation of the Decay $B\to K{\ell }^{+}{\ell }^{-}$
• Exclusive B -> K^* l^+ l^- decay with polarized K^* and new physics effects
• Search for the Rare Decays B --> Kl^+l^- and B --> K^*l^+l^-
• Improved Upper Limits on the FCNC Decays $B\to K{\ell }^{+}{\ell }^{-}$ and $B\to K^{\ast }(892){\ell }^{+}{\ell }^{-}$
• Evidence for the Electroweak Penguin Decay $B\to X_s{\ell }^{+}{\ell }^{-}$}

Cited by in corpus (7)

• Rare dileptonic decays of Λ_b in a quark model
• Model Independent Analysis of the Forward-Backward Asymmetry for the $B\to K_1{\mu }^{+}{\mu }^{-}$ Decay
• Lepton polarization asymmetries for FCNC decays of the ${\Lambda }_b$ baryon
• Custodial bulk Randall-Sundrum model and B->K* l+ l'-
• Looking for forward backward asymmetries in $B\to K{\mu }^{+}{\mu }^{-}$ and $K^{+}\to {\pi }^{+}{\mu }^{+}{\mu }^{-}$
• Probe the effects of split SUSY in rare B decays
• The Forward-Backward Asymmetry in the $B\to \pi {\ell }^{+}{\ell }^{-}$ Decay