B→K1γ and tests of factorization for two-body non-leptonic B decays with axial-vector mesons

The large branching ratio for B→K1γ 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 Letter we present an analysis of two-body B decays with an axial-vector meson in the final state us...

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Bibliographic Details
Published in:Physics letters. B 2005-09, Vol.623 (1-2), p.65-72
Main Authors: Nardulli, G., Pham, T.N.
Format: Article
Language:English
Subjects:
Exact sciences and technology
Nuclear physics
Physics
The physics of elementary particles and fields
Online Access:Get full text
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Summary:The large branching ratio for B→K1γ 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 Letter 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/ψK1 branching ratio is in agreement with experiment. We also suggest that the decay rates of B→K1π, B→a1K and B→b1K could be used to test the factorization ansatz.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2005.07.048