B -> chi_cJ K decays revisited
arXiv:0810.3575 · doi:10.1016/j.nuclphysb.2008.11.025
Abstract
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.
32 pages, LaTeX
References in corpus (5)
- Averages of b-hadron and c-hadron Properties at the End of 2007
- Ultrasoft contribution to quarkonium production and annihilation
- Ultrasoft contribution to heavy-quark pair production near threshold
- Factorization theorems for exclusive heavy-quarkonium production
- Decay b -> (c\bar{c}) s in the leading logarithm approximation