Semileptonic $B_c$ decays and Charmonium distribution amplitude
| dc.creator | Huang, Tao | |
| dc.creator | Zuo, Fen | |
| dc.date | 2007-02-15 | |
| dc.date | 2007-03-29 | |
| dc.date.accessioned | 2026-07-07T11:22:38Z | |
| dc.date.available | 2026-07-07T11:22:38Z | |
| dc.description | In this paper we study the semileptonic decays of the $B_c$ meson in the Light-Cone Sum Rule (LCSR) approach. The result for each channel depends on the corresponding distribution amplitude of the final meson. For the case of $B_c$ decaying into a pseudoscalar meson, to twist-3 accuracy only the leading twist distribution amplitude (DA) is involved if we start from a chiral current. If we choose a suitable chiral current in the vector meson case, the main twist-3 contributions are also eliminated and we can consider the leading twist contribution only. The leading twist distribution amplitudes of the charmonium and other heavy mesons are given by a model approach in the reasonable way. Employing this charmonium distribution amplitude we find the cross section $σ(e^+e^-\to J/ψ+η_c)\simeq22.8 {fb}$ which is consistent with Belle and BaBar's data. Based on this model, we calculate the form factors for various $B_c$ decay modes in the corresponding regions. Extrapolating the form factors to the whole kinetic regions, we get the decay widths and branching ratios for various $B_c$ decay modes including their $τ$ modes when they are kinematically accessible. | |
| dc.description | Changed content partially, Added references, 16 pages,2 figures | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0702147 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0702147 | |
| dc.identifier | Eur.Phys.J.C51:833-839,2007 | |
| dc.identifier | doi:10.1140/epjc/s10052-007-0333-4 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/194637 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Semileptonic $B_c$ decays and Charmonium distribution amplitude | |
| dc.type | text |