Analysis of the strong decays $D_{s3}^{\ast }(2860)\to DK$, $D^{\ast }K$ with QCD sum rules

Abstract

In this article, we assign the $D_{s3}^{\ast }(2860)$ to be a D-wave $c\bar{s}$ meson, study the hadronic coupling constants $G_{D_{s3}^{\ast }(2860)DK}$ and $G_{D_{s3}^{\ast }(2860)D^{\ast }K}$ with the three-point QCD sum rules, and calculate the partial decay widths $\Gamma \left(D_{s3}^{\ast }(2860)\to D^{\ast }K\right)$ and $\Gamma \left(D_{s3}^{\ast }(2860)\to DK\right)$. The predicted ratio $R=\Gamma \left(D_{s3}^{\ast }(2860)\to D^{\ast }K\right)/\Gamma \left(D_{s3}^{\ast }(2860)\to DK\right)=0.57\pm 0.38$ cannot reproduce the experimental value $R=\mathrm{Br}\left(D_{sJ}^{\ast }(2860)\to D^{\ast }K\right)/\mathrm{Br}\left(D_{sJ}^{\ast }(2860)\to DK\right)=1.10\pm 0.15\pm 0.19$.

18 pages, 6 figures

References in corpus (9)

• $D_{sJ}(2860)$ and $D_{sJ}(2715)$
• Strong decays of heavy-light mesons in a chiral quark model
• $D_{sJ}(2860)$ resonance and the $s_{\ell }^P={\frac{5}{2}}^{-}$ $c\bar{s}$ ($c\bar{q}$) doublet
• More kaonic bound states and a comprehensive interpretation of the D_{sJ} states
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• Charmed-strange Meson Spectrum: Old and New Problems
• Understanding masses of $c\bar{s}$ states in Regge phenomenology
• $D_{s3}^{\ast }(2860)$ and $D_{s1}^{\ast }(2860)$ as the 1D $c\bar{s}$ states
• A multiquark description of the $D_{sJ}(2860)$ and $D_{sJ}(2700)$

Cited by in corpus (2)

• A review of the open charm and open bottom systems
• Mass spectra and strong decays of charmed and charmed-strange mesons