B -> K1 gamma and tests of factorization for two-body non leptonic Bdecays with axial-vector mesons

Abstract

The large branching ratio for B-> K1 gamma recently measured at Belle implies a large B -> K1 transition form factor and large branching ratios for non leptonic B decays involving an axial-vector meson. In this paper we present an analysis of two-body B decays with an axial-vector meson in the final state using naive factorization and the B -> K1 form factors obtained from the measured radiative decays. We find that the predicted B -> J/psi K1 branching ratio is in agreement with experiment. We also suggest that the decay rates of B -> K1 pi, B -> a1 K and B -> b1 K could be used to test the factorization ansatz.

arXiv comment8 pages; 7 new references included and a comment on K2(1430) in the final state added

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Cited by in corpus (17)

• Quark level and hadronic contributions to the electric dipole moment of charged leptons in the standard model
• $B\to K_1\gamma$ Decays in the Light-Cone QCD Sum Rules
• Hadronic charmless B decays B-> AP
• Nonleptonic two-body B-decays including axial-vector mesons in the final state
• Regarding the axial-vector mesons
• Branching ratios of $B_c\to AP$ decays in the perturbative QCD approach
• Study of the pure annihilation $B_c\to A_2{A}_3$ decays
• Non leptonic B decays to axial-vector mesons and factorization
• Strange axial-vector mesons mixing angle
• Lepton polarization in $B\to K_1{\ell }^{+}{\ell }^{-}$ Decays
• Radiative $B\to K_1$ decays in the light-cone sum rules
• Branching ratios of $B_c$ Meson Decaying to Vector and Axial-Vector Mesons
• Role of final state interactions in the B meson decay into two pions
• Nuclear Effects in Deep Inelastic Scattering of Charged-Current Neutrino off Nuclear
• First Estimates of Nonleptonic $B_c\to AT$ Weak Decays
• $B\to K_1(1270)(\to \rho K){\ell }^{+}{\ell }^{-}$ in LEET
• Nonleptonic charmless two-body $B\to AT$ decays