Structure of the $D_{s0}(2317)$ and the strong coupling constant $g_{D_{s0} D K}$ with the light-cone QCD sum rules

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dc.creatorWang, Z. G.
dc.creatorWan, S. L.
dc.date2006-03-01
dc.date2006-05-03
dc.date.accessioned2026-07-07T10:44:49Z
dc.date.available2026-07-07T10:44:49Z
dc.descriptionIn this article, we take the point of view that the charmed scalar meson $D_{s0}(2317)$ is the conventional $c\bar{s}$ meson and calculate the strong coupling constant $g_{D_{s0} D K}$ within the framework of the light-cone QCD sum rules approach. The numerical values for the large scalar-$DK$ coupling constant $g_{D_{s0} D K}$ support the hadronic dressing mechanism. Just like the scalar mesons $f_0(980)$ and $a_0(980)$, the $D_{s0}(2317)$ may have small scalar $c\bar{s}$ kernel of the typical $c\bar{s}$ meson size. The strong coupling to the hadronic channels (or the virtual mesons loops) may result in smaller mass than the conventional scalar $c\bar{s}$ meson in the constituent quark models, and enrich the pure $c\bar{s}$ state with other components. The $D_{s0}(2317)$ may spend part (or most part) of its lifetime as virtual $ D K $ state.
dc.description17 pages, 7 figure, revised version, add detailed error analysis
dc.identifierhttps://arxiv.org/abs/hep-ph/0603007
dc.identifierhttp://arxiv.org/abs/hep-ph/0603007
dc.identifierPhys.Rev.D73:094020,2006
dc.identifierdoi:10.1103/PhysRevD.73.094020
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/182731
dc.subjectHigh Energy Physics - Phenomenology
dc.titleStructure of the $D_{s0}(2317)$ and the strong coupling constant $g_{D_{s0} D K}$ with the light-cone QCD sum rules
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