| Title | psi(3770) and B meson exclusive decay B ->psi(3770)K in QCD factorization |
| Authors | Gao, Ying-Jia Meng, Ce Chao, Kuang-Ta |
| Affiliation | Peking Univ, Dept Phys, Beijing 100871, Peoples R China. China Ctr Adv Sci & Technol, World Lab, Beijing 100080, Peoples R China. |
| Keywords | QUARKONIUM STATES CHARMONIUM ANNIHILATION |
| Issue Date | 2006 |
| Publisher | european physical journal a |
| Citation | EUROPEAN PHYSICAL JOURNAL A.2006,28,(3),361-367. |
| Abstract | Belle has observed surprisingly copious production of psi(3770) in the B meson decay B --> psi(3770)K, whose rate is comparable to that of B --> psi(3686)K. We study this puzzling process in the QCD factorization approach with the effect of the S-D mixing considered. We find that the soft scattering effects in the spectator interactions play an essential role. With a proper parametrization for the higher-twist soft end-point singularities associated with kaon, and with the S-D mixing angle theta = - 12 degrees, the calculated decay rates can be close to the data. Implications of these soft spectator effects to other charmonium production in B exclusive decays are also emphasized. |
| URI | http://hdl.handle.net/20.500.11897/149123 |
| ISSN | 1434-6001 |
| DOI | 10.1140/epja/i2006-10059-y |
| Indexed | SCI(E) |
| Appears in Collections: | 物理学院 |
