Chiral symmetry-breaking corrections to strong decays of D*s0(2317) and D's1(2460) in HH\c{hi}PT

Abstract

The strong decays of two narrow mesons $D_{s0}^{*}(2317)$ and $D_{s1}^{'}(2460)$ are studied within the framework of heavy hadron chiral perturbation theory. Up to next-to-leading order in $1/\Lambda_{\chi}$, by a fit to the experimental widths of their nonstrange partners, the chiral symmetry-breaking coupling constants are extracted. The single-pion decay widths are estimated to be $\Gamma(D_{s0}^{*}(2317)\to D_{s}^{+}\pi^{0})=9.2\pm2.3$ KeV and $\Gamma(D_{s1}^{'}(2460)\to D_{s}^{*+}\pi^{0})=9.0\pm2.1$ KeV, respectively, which are consistent with the experimental constraints and comparable with other theoretical predictions. The numerical analysis shows that chiral-symmetry corrections to the decay widths are significant. Applications and predictions for the corresponding beauty mesons are also provided.