Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-07-17
Phys.Rev.D63:074010,2001
Physics
High Energy Physics
High Energy Physics - Phenomenology
31 pages Latex (uses epsf, revtex). Section II expanded, typos corrected. This version will appear in Phys. Rev. D
Scientific paper
10.1103/PhysRevD.63.074010
We study the semileptonic transitions B_c to \eta_c, J/\psi, D, D^*, B, B^*, B_s, B_s^* in the framework of a relativistic constituent quark model. We use experimental data on leptonic J/\psi decay, lattice and QCD sum rule results on leptonic B_c decay, and on radiative \eta_c transitions to adjust the quark model parameters. We compute all form factors of the above semileptonic B_c-transitions and give predictions for various semileptonic B_c decay modes including their \tau-modes when they are kinematically accessible. The implications of heavy quark symmetry for the semileptonic decays are discussed and are shown to be manifest in our explicit relativistic quark model calculation. A comparison of our results with the results of other calculations is performed.
Ivanov Michael A.
Körner Juergen G.
Santorelli Pietro
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