Decays of the $B_c$ Meson in a Relativistic Quark-Meson Model

Abstract

The semileptonic decay form factors of the double heavy $B_c$ meson provide a unique opportunity to study the strong interactions between two heavy quarks. A fully relativistic model, with effective non-local quark-meson interactions, is used to compute semileptonic decay form factors, for both the $B_c$ and a wide range of other heavy-light mesons. Using these form factors predictions for decay rates and branching ratios are obtained. The results are compared to other theoretical approaches and, where available, to experimental results. In addition the radiative decay of $B_c^{\ast }$ is discussed.

29 pages, 4 figures, accepted for publication in J. Phys. G

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• Next-to-leading order QCD calculation of $B_c$ to charmonium tensor form factors
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