Structure of the axial-vector meson $D_{s1}(2460)$ and the strong coupling constant $g_{D_{s1} D^* K}$ with the light-cone QCD sum rules

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dc.creatorWang, Z. G.
dc.date2006-11-21
dc.date2007-02-04
dc.date.accessioned2026-07-07T11:22:09Z
dc.date.available2026-07-07T11:22:09Z
dc.descriptionIn this article, we take the point of view that the charmed axial-vector meson $D_{s1}(2460)$ is the conventional $c\bar{s}$ meson and calculate the strong coupling constant $g_{D_{s1} D^* K}$ in the framework of the light-cone QCD sum rules approach. The numerical values of strong coupling constants $g_{D_{s1} D^* K}$ and $g_{D_{s0} D K}$ are very large, and support the hadronic dressing mechanism. Just like the scalar mesons $f_0(980)$ and $a_0(980)$, the scalar meson $D_{s0}(2317)$ and axial-vector meson $D_{s1}(2460)$ may have small $c\bar{s}$ kernels of the typical $c\bar{s}$ meson size, the strong couplings to the hadronic channels (or the virtual mesons loops) may result in smaller masses than the conventional $c\bar{s}$ mesons in the constituent quark models, and enrich the pure $c\bar{s}$ states with other components.
dc.description17 pages, 7 figures, revised version. In the first version, I take the value $f_{D_{s1}}= (0.25\pm0.02)GeV$ in numerical calculation, in the revised version, I take a small value $f_{D_{s1}}=(0.225 \pm0.020)GeV$, the value of the strong coupling constant is also changed
dc.identifierhttps://arxiv.org/abs/hep-ph/0611271
dc.identifierhttp://arxiv.org/abs/hep-ph/0611271
dc.identifierJ.Phys.G34:753-765,2007
dc.identifierdoi:10.1088/0954-3899/34/4/011
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/194476
dc.subjectHigh Energy Physics - Phenomenology
dc.titleStructure of the axial-vector meson $D_{s1}(2460)$ and the strong coupling constant $g_{D_{s1} D^* K}$ with the light-cone QCD sum rules
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