The $B_c$ Decays to $P$-wave Charmonium by Improved Bethe-Salpeter Approach

Details The $B_c$ Decays to $P$-wave Charmonium by Improved Bethe-Salpeter Approach The $B_c$ Decays to $P$-wave Charmonium by Improved Bethe-Salpeter Approach

2011-07-03

arxiv.org/abs/1107.0474v2

J. Phys. G: Nucl. Part. Phys. 39 (2012) 015009

Physics

High Energy Physics

High Energy Physics - Phenomenology

33 pages, 5 figures, 3 tables

Scientific paper

We re-calculate the exclusive semileptonic and nonleptonic decays of $B_c$ meson to a $P$-wave charmonium in terms of the improved Bethe-Salpeter (B-S) approach, which is developed recently. Here the widths for the exclusive semileptonic and nonleptonic decays, the form factors, and the charged lepton spectrums for the semileptonic decays are precisely calculated. To test the concerned approach by comparing with experimental measurements when the experimental data are available, and to have comparisons with the other approaches the results obtained by the approach and those by some approaches else as well as the original B-S approach, which appeared in literature, are comparatively presented and discussed.

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