Masses and radiative decay widths of the $D_{s0}^{\ast }(2317)$ and $D_{s1}^{\prime }(2460)$ and their bottom analogs

Abstract

We study the mass spectra and radiative decays of $D_{s0}^{\ast }(2317)$ and $D_{s1}^{\prime }(2460)$ in an unquenched framework. In addition to coupled channel effects between the $c\bar{s}$ cores and $D^{(\ast )}K$ channels, $D^{(\ast )}K$-$D^{(\ast )}K$ self interactions are also considered in this work and we succeed to reproduce their mass spectra. Furthermore, we study the radiative decays of the $D_{s0}^{\ast }(2317)$ and $D_{s1}^{\prime }(2460)$ by simultaneously including the compound structures of conventional $c\bar{s}$ cores and $D^{(\ast )}K$ components. We also calculate their bottom analogs with heavy quark symmetry. Our study offers useful insights into the important unquenched effects in the formation of $D_{s0}^{\ast }(2317)$, $D_{s1}^{\prime }(2460)$ and the bottom counterparts.

arXiv comment18 pages, 3 tables, 7 figures

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