B -> chi_cJ K decays revisited

Details B -> chi_cJ K decays revisited B -> chi_cJ K decays revisited

2008-10-20

arxiv.org/abs/0810.3575v1

Nucl.Phys.B811:155-181,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

32 pages, LaTeX

Scientific paper

10.1016/j.nuclphysb.2008.11.025

We demonstrate that exclusive B decays to P-wave charmonium factorize in the non-relativistic limit provided that colour-octet contributions are taken into account, and estimate the branching fractions. Although there are very large uncertainties, we find reasonable parameter choices, where the main features of the data -- large corrections to (naive) factorization and suppression of the chi_{c2} and h_c final states -- are reproduced though the suppression of chi_{c2} is not as strong as seen in the data. Our results also provide an example, where an endpoint divergence in hard spectator-scattering factorizes and is absorbed into colour-octet operator matrix elements.

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