Semileptonic and nonleptonic decays of Bc mesons to orbitally excited heavy mesons in the relativistic quark model

被引：46

作者：

Ebert, D. ^{[1
]}

Faustov, R. N. ^{[1
,2
]}

Galkin, V. O. ^{[1
,2
]}

机构：

[1] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany

[2] Russian Acad Sci, Dorodnicyn Comp Ctr, Moscow 119991, Russia

来源：

PHYSICAL REVIEW D | 2010年 / 82卷 / 03期

基金：

俄罗斯基础研究基金会;

关键词：

QCD FACTORIZATION; FORM-FACTORS; LIGHT;

D O I：

10.1103/PhysRevD.82.034019

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The form factors of weak decays of the B-c meson to orbitally excited charmonium, D, B-s, and B mesons are calculated in the framework of the QCD-motivated relativistic quark model based on the quasipotential approach. Relativistic effects are systematically taken into account. The form factor dependence on the momentum transfer is reliably determined in the whole kinematical range. The form factors are expressed through the overlap integrals of the meson wave functions, which are known from the previous mass spectra calculations within the same model. On this basis, semileptonic and nonleptonic B-c decay rates to orbitally excited heavy mesons are calculated. Predictions for the B-c decays to the orbitally and radially excited 2P and 3S charmonium states are given, which could be used for clarifying the nature of the recently observed charmoniumlike states above the open charm production threshold.

引用

页数：22

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