Structure of the D s 0 ( 2317 ) and the strong coupling constant g D s 0 DK with the light - cone QCD sum rules
نویسنده
چکیده
In this article, we take the point of view that the charmed scalar meson Ds0(2317) is the conventional cs̄ meson and devote to evaluate the strong coupling constant gDs0DK within the framework of the light-cone QCD sum rules approach. The numerical values for the large scalar-DK coupling constant gDs0DK support the hadronic dressing mechanism, just like the scalar mesons f0(980) and a0(980), the Ds0(2317) may have small cs̄ kernel of the typical cs̄ meson size, the strong coupling to the hadronic channels (or the virtual meson loops) may result in a smaller mass than the conventional scalar cs̄ meson in the constituent quark models, enrich the pure cs̄ state with other components and spend part of its lifetime as virtual DK state. PACS numbers: 12.38.Lg; 13.25.Jx; 14.40.Cs
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تاریخ انتشار 2006