Annihilation Contributions in B -> K_1 gamma decay in next-to-leading order in LEET and CP-asymmetry

Abstract

The effect of weak annihilation and u-quark penguin contribution on the branching ratio B -> K_1 gamma at next-to-leading order of alpha_s are calculated using LEET approach. It is shown that the value of LEET form factor remains the same in the range of unitarity triangle phase alpha favored by the Standard Model. CP-asymmetry for above mentioned decay has been calculated and its suppression due to the hard spectator correction has also been incorporated. In addition, the sensitivity of the CP-asymmetry on the underlying parameters has been discussed.

arXiv comment12 pages, 10 figures

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Cited by in corpus (7)

• Rare Decays of Λ_b->Λ+ γand Λ_b ->Λ+ l^{+} l^{-} in the Light-cone Sum Rules
• Form factors, branching ratio and forward-backward asymmetry in B -> K_{1}ell ^{+} ell ^{-} decays
• Branching Ratios, Forward-backward Asymmetry and Angular Distributions of $B\to K_1{l}^{+}{l}^{-}$ Decays
• Model Independent Analysis of the Forward-Backward Asymmetry for the $B\to K_1{\mu }^{+}{\mu }^{-}$ Decay
• Semileptonic charmed $B$ meson decays in Universal Extra Dimension Model
• Radiative $B$ to axial-vector meson decays at NLO in Soft-Collinear Effective Theory
• $B\to K_1(1270)(\to \rho K){\ell }^{+}{\ell }^{-}$ in LEET