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

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

2005-05-06

arxiv.org/abs/hep-ph/0505048v2

Phys.Lett. B623 (2005) 65-72

Physics

High Energy Physics

High Energy Physics - Phenomenology

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

Scientific paper

10.1016/j.physletb.2005.07.048

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.

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