Eur. Phys. J. C (2006) 47: 413-421
https://doi.org/10.1140/epjc/s2006-02579-5

Theoretical Physics

Analysis of the semileptonic B_c→B_u ^*ℓ⁺ℓ^- decay from QCD sum rules

Physics Department, Middle East Technical University, 06531, Ankara, Turkey

^* e-mail: taliev@metu.edu.tr

Received: 1 April 2006
Published online: 7 June 2006

Abstract

We analyze the semileptonic B_c→B_u ^*ℓ⁺ℓ^- decay in the framework of the Standard Model. We calculate the B_c to B_u ^* transition form factors in QCD sum rules. Analytical expressions for the spectral densities and gluon condensates are presented. The branching ratio of the B_c→B_u ^*ℓ⁺ℓ^- decay is calculated, and it is obtained that this decay can be detectable at forthcoming LHC machines.