arXiv:hep-ph/0610320AbstractReferencesReviewsResources
QCD sum rule approach to the new mesons and the $g_{D_{sJ}DK}$ coupling constant
Published 2006-10-24Version 1
We use diquark-antidiquark currents to investigate the masses and partial decay widths of the recently observed mesons $D_{sJ}^{+}(2317)$, $D_0^{*0}(2308)$ and X(3872), considered as four-quark states, in a QCD sum rule approach. In particular we investigate the coupling constant $g_{D_{sJ}DK}$. We found that the $g_{D_{sJ}DK}$ obtained in this four-quark scenario is smaller than the coupling constant obtained when $D_{sJ}^{+}(2317)$ is considered as a conventional $c\bar{s}$ state.
Comments: 3 pages 1 eps figure, proceedings of the 36th. International Symposium on Multiparticle Dynamics (ISMD 2006)
Journal: Braz.J.Phys.37:742-744,2007
Categories: hep-ph
Keywords: qcd sum rule approach, coupling constant, partial decay widths, four-quark states, four-quark scenario
Tags: journal article
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