Nonfactorizable $B\toχ_{c0}K$ decay and QCD factorization
| dc.creator | Meng, Ce | |
| dc.creator | Gao, Ying-Jia | |
| dc.creator | Chao, Kuang-Ta | |
| dc.date | 2005-02-27 | |
| dc.date | 2006-09-13 | |
| dc.date.accessioned | 2026-07-07T12:53:45Z | |
| dc.date.available | 2026-07-07T12:53:45Z | |
| dc.description | We study the unexpectedly large rate for the factorization-forbidden decay $B\to χ_{c0}K$ within the QCD factorization approach. We use a non-zero gluon mass to regularize the infrared divergences in vertex corrections. The end-point singularities arising from spectator corrections are regularized and carefully estimated by the off-shellness of quarks. We find that the contributions arising from the vertex and leading-twist spectator corrections are numerically small, and the twist-3 spectator contribution with chiral enhancement and linear end-point singularity becomes dominant. With reasonable choices for the parameters, the branching ratio for $B\toχ_{c0}K$ decay is estimated to be in the range $(2-4)\times 10^{-4}$, which is compatible with the Belle and BaBar data. | |
| dc.description | Appendix added; it is emphasized that in the dominant twist-3 spectator corrections the end-point singularity contributions may be estimated by the off-shellness of the charm quark (by the binding energy in charmonium) and the gluon (by the transverse momentum of the light quark in the kaon) | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0502240 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0502240 | |
| dc.identifier | Commun.Theor.Phys.48:885-890,2007 | |
| dc.identifier | doi:10.1088/0253-6102/48/5/026 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/223728 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Nonfactorizable $B\toχ_{c0}K$ decay and QCD factorization | |
| dc.type | text |