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Physical Review D

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Exclusive semileptonic and nonleptonic decays of $B$ mesons to orbitally excited light mesons

D. Ebert¹, R. N. Faustov^1,2, and V. O. Galkin^1,2

¹Institut für Physik, Humboldt–Universität zu Berlin, Newtonstrasse 15, D-12489 Berlin, Germany
²Dorodnicyn Computing Centre, Russian Academy of Sciences, Vavilov Street 40, 119991 Moscow, Russia

Phys. Rev. D 85, 054006 – Published 9 March, 2012

DOI: https://doi.org/10.1103/PhysRevD.85.054006

Abstract

The form factors of weak decays of the $B$ meson to orbitally excited scalar, axial vector, and tensor light 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 factors are expressed through the overlap integrals of the meson wave functions, and their dependence on the momentum transfer is self-consistently determined in the whole kinematical range. On this basis semileptonic and two-body nonleptonic $B$ decay rates to orbitally excited light mesons are calculated. Good agreement of the obtained predictions with available experimental data is found.

Article Text

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