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arXiv · 2001.10195

Semileptonic Decays of Charmed Mesons to Light Scalar Mesons

Nakul R. Soni·Akshay N. Gadaria·Janaki J. Patel·Jignesh N. Pandya
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Abstract

Within the framework of covariant confined quark model, we compute the transition form factors of $D$ and $D_s$ mesons decaying to light scalar mesons $f_0(980)$ and $a_0(980)$. The transition form factors are then utilized to compute the semileptonic branching fractions. We study the channels namely, $D_{(s)}^+ \to f_0(980) \ell^+ \nu_\ell$ and $D \to a_0(980) \ell^+ \nu_\ell$ for $\ell = e$ and $\mu$. For computation of semileptonic branching fractions, we consider the $a_0(980)$ meson to be the conventional quark-antiquark structure and the $f_0(980)$ meson as the admixture of $s\bar{s}$ and light quark-antiquark pairs. Our findings are found to support the recent BESIII data.

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Nakul R. Soni, Akshay N. Gadaria, Janaki J. Patel, Jignesh N. Pandya. 2020-01-28. Semileptonic Decays of Charmed Mesons to Light Scalar Mesons. https://doi.org/10.1103/physrevd.102.016013

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