Understanding $D_{sJ}(2317)$

P. Colangelo; F. De Fazio

doi:10.1016/j.physletb.2003.08.003

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arXiv · hep-ph/0305140

Understanding $D_{sJ}(2317)$

P. Colangelo·F. De Fazio

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Abstract

We analyze the hadronic and radiative decay modes of the recently observed $D_{sJ}(2317)$ meson, in the hypothesis that it can be identifield with the scalar $s_\ell^P={1\over 2}^+$ state of $c \bar s$ spectrum ($D_{s0}$). The method is based on heavy quark symmetries and Vector Meson Dominance ansatz. We find that the hadronic isospin violating mode $D_{s0} \to D_s π^0$ is enhanced with respect to the radiative mode $D_{s0} \to D_s^* γ$. The estimated width of the meson is $Γ(D_{s0})\simeq 7$ KeV.

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P. Colangelo, F. De Fazio. 2003-05-13. Understanding $D_{sJ}(2317)$. https://doi.org/10.1016/j.physletb.2003.08.003

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