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

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

2006-12-19

arxiv.org/abs/hep-ph/0612225v4

Phys.Rev.D75:034013,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

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

Scientific paper

10.1103/PhysRevD.75.034013

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 $$) and $G_A$(for $$) 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 $\phi(1020)$, we study the radiative decays $D_{s0}\to D_s^* \gamma $ and $D_{s1}\to D_s \gamma $.

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