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arXiv · 1707.02851

Branching fractions of semileptonic $D$ and $D_s$ decays from the covariant light-front quark model

Hai-Yang Cheng·Xian-Wei Kang
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Abstract

Based on the predictions of the relevant form factors from the covariant light-front quark model, we show the branching fractions for the $D (D_s) \to (P,\,S,\,V,\,A)\,\ellν_\ell$ ($\ell=e$ or $μ$) decays, where $P$ denotes the pseudoscalar meson, $S$ the scalar meson with a mass above 1 GeV, $V$ the vector meson and $A$ the axial-vector one. Comparison with the available experimental results are made, and we find an excellent agreement. The predictions for other decay modes can be tested in a charm factory, e.g., the BESIII detector. The future measurements will definitely further enrich our knowledge on the hadronic transition form factor as well as the inner structure of the even-parity mesons ($S$ and $A$).

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Hai-Yang Cheng, Xian-Wei Kang. 2017-10-28. Branching fractions of semileptonic $D$ and $D_s$ decays from the covariant light-front quark model. https://doi.org/10.1140/epjc%2Fs10052-017-5170-5

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