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arXiv · 2005.08218

Weak B Decays into Orbitally Excited Charmed Mesons

J. Segovia·C. Albertus·D. R. Entem·F. Fernández·E. Hernández·M. A. Pérez-García
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Abstract

The BaBar Collaboration has recently reported branching fractions for semileptonic decays of the $B$ meson 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 within the framework of a constituent quark model in two steps, one which involves a semileptonic decay and the other one mediated by a strong process. Our results are in agreement with the experimental data.

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J. Segovia, C. Albertus, D. R. Entem, F. Fernández, E. Hernández, M. A. Pérez-García. 2020-05-17. Weak B Decays into Orbitally Excited Charmed Mesons. https://arxiv.org/abs/2005.08218

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