Radiative $B\to K_1$ decays in the light-cone sum rules

Abstract

The weak form factor for $B\to K_{1B}$ where $K_{1B}$ is the ${}^1{P}_1$ state is calculated in the light-cone sum rules (LCSR). Combining the quark model result for the form factor of $B\to K_{1A}$ with $K_{1A}$ being the ${}^3{P}_1$ state, we have larger values for $B\to K_1$ form factors than the previous LCSR results. The increased form factors reduce the discrepancy between theory and the experimental data for $B\to K_1\gamma$. Some phenomenological meanings are also discussed.

15 pages, 4 figures

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• Measurement of Branching Fractions for B0 ->K*2(1430)0 gamma and B+ -> K*2(1430)+ gamma
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Cited by in corpus (13)

• Rare Decays of Λ_b->Λ+ γand Λ_b ->Λ+ l^{+} l^{-} in the Light-cone Sum Rules
• Determination of the magnetic susceptibility of the quark condensate using radiative heavy meson decays
• Transition form factors of B decays into p-wave axial-vector mesons in the perturbative QCD approach
• $B\to K_1\gamma$ Decays in the Light-Cone QCD Sum Rules
• B to V, A, T Tensor Form Factors in the Covariant Light-Front Approach: Implications on Radiative B Decays
• Determining the photon polarization of the b --> s gamma using the B --> K1(1270) gamma --> (K pi pi) gamma decay
• Nonleptonic two-body B-decays including axial-vector mesons in the final state
• Strong coupling constants of bottom and charmed mesons with scalar, pseudoscalar and axial vector kaons
• Semileptonic $D_q\to K_1\ell \nu$ and nonleptonic $D\to K_1\pi$ decays in three--point QCD sum rules and factorization approach
• Model Independent Analysis of the Forward-Backward Asymmetry for the $B\to K_1{\mu }^{+}{\mu }^{-}$ Decay
• The Semileptonic $B$ to $K_1(1270,1400)$ Decays in QCD Sum Rules
• Asymmetry Parameter of the $K_1(1270,1400)$ by Analyzing the $B\to K_1\nu \bar{\nu }$ Transition Form Factors within QCD
• $B\to K_1(1270)(\to \rho K){\ell }^{+}{\ell }^{-}$ in LEET