Semileptonic $B$ and $B_{s}$ decays into orbitally excited charmed mesons

Details Semileptonic $B$ and $B_{s}$ decays into orbitally excited charmed mesons Semileptonic $B$ and $B_{s}$ decays into orbitally excited charmed mesons

2011-07-21

arxiv.org/abs/1107.4248v3

Physical Review D 84, 094029 (2011)

Physics

High Energy Physics

High Energy Physics - Phenomenology

Physical Review D 84, 094029 (2011). 20 pages, 9 figures

Scientific paper

10.1103/PhysRevD.84.094029

The BaBar Collaboration has recently reported products of branching fractions that include $B$ meson semileptonic decays into final states with charged and neutral $D_{1}(2420)$ and $D_{2}^{\ast}(2460)$, two narrow orbitally excited charmed mesons. We evaluate these branching fractions, together with those concerning $D_{0}^{\ast}(2400)$ and $D_{1}'(2430)$ mesons, within the framework of a constituent quark model. The calculation is performed in two steps, one of which involves a semileptonic decay and the other is mediated by a strong process. Our results are in agreement with the experimental data. We also extend the study to semileptonic decays of $B_{s}$ into orbitally excited charmed-strange mesons, providing predictions to the possible measurements to be carried out at LHC.

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