Radiative decays of the $D_{s0}(2317)$, $D_{s1}(2460)$ and the related strong coupling constants

Abstract

In this article, we take the point of view that the charmed mesons $D_{s0}(2317)$ and $D_{s1}(2460)$ with the spin-parity $0^{+}$ and $1^{+}$ respectively are the conventional $c\bar{s}$ states, and calculate the strong coupling constants $G_S$(for $<D_s^{\ast }\varphi |D_{s0}>$) and $G_A$(for $<D_s\varphi |D_{s1}>$) in the framework of the light-cone QCD sum rules approach. The strong coupling constants $G_S$ and $G_A$ are related to the basic parameter $\hat{\mu }$ in the heavy quark effective Lagrangian, the numerical value is larger than the existing estimation. With the assumption of the vector meson dominance of the intermediate $\varphi (1020)$, we study the radiative decays $D_{s0}\to D_s^{\ast }\gamma$ and $D_{s1}\to D_s\gamma$.

16 pages, 4 figures, revised version (correct writing errors)

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Cited by in corpus (18)

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• Hidden gauge formalism for the radiative decays of axial-vector mesons
• D* K molecular structure of the Ds1(2460) meson
• Strong and radiative decays of the $D_{s0}^{\ast }(2317)$ and $D_{s1}(2460)$
• Analysis of the vertices D^*D^* P, D^*D V and DDV with light-cone QCD sum rules
• Meson loops in the $f_0(980)$ and $a_0(980)$ radiative decays into $\rho$, $\omega$
• Radiative decay of the dynamically generated open and hidden charm scalar meson resonances D_{s0}^*(2317) and X(3700)
• Weak decays of heavy hadron molecules involving the f0(980)
• Analysis of the vertices $DDV$ and $D^{\ast }DV$ with light-cone QCD sum rules
• Charm Physics - A Field Full with Challenges and Opportunities
• Production of $P-$wave charmed and charmed-strange mesons in pion and kaon induced reactions
• Electric transitions of the charmed-strange mesons in a relativistic quark model
• Masses and radiative decay widths of the $D_{s0}^{\ast }(2317)$ and $D_{s1}^{\prime }(2460)$ and their bottom analogs
• Radiative decays of the $(0^{+},1^{+})$ strange-bottom mesons
• Decay properties of $D_{s0}^{\ast }(2317{)}^{+}$ as a conventional $c\bar{s}$ meson
• The $B^{+(0)}\to {\bar{D}}^{0(-)}{D}_{s0}^{\ast }(2317{)}^{+}$ decays and the molecular structure of $D_{s0}^{\ast }(2317)$
• Exotic hadrons associated with $b$-quark
• What can we learn from the radiative decays of the $D_{s1}(2460)$ meson?