Multichannel calculation of the very narrow $D_{s0}^*(2317)$ and the very broad $D_0^*(2300-2400)$

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dc.creatorRupp, George
dc.creatorvan Beveren, Eef
dc.date2006-10-16
dc.date.accessioned2026-07-07T10:25:43Z
dc.date.available2026-07-07T10:25:43Z
dc.descriptionThe narrow $D_{s0}^{\ast}$(2317) and broad $D_0^{\ast}$(2300-2400) charmed scalar mesons and their radial excitations are described in a coupled-channel quark model that also reproduces the properties of the light scalar nonet. All two-meson channels containing ground-state pseudoscalars and vectors are included. The parameters are chosen fixed at published values, except for the overall coupling constant $λ$, which is fine-tuned to reproduce the $D_{s0}^{\ast}$(2317) mass, and a damping constant $α$ for subthreshold contributions. Variations of $λ$ and $D_0^{\ast}$(2300-2400) pole postions are studied for different $α$ values. Calculated cross sections for $S$-wave $DK$ and $Dπ$ scattering, as well as resonance pole positions, are given for the value of $α$ that fits the light scalars. The thus predicted radially excited state ${D_{s0}^*}'$(2850), with a width of about 50 MeV, seems to have been observed already.
dc.description3 pages, EPJ LaTeX, 2 Postscript figures, 1 table; parallel talk at the IVth International Conference on Quarks and Nuclear Physics (QNP06), Madrid, 5-10 June 2006
dc.identifierhttps://arxiv.org/abs/hep-ph/0610188
dc.identifierhttp://arxiv.org/abs/hep-ph/0610188
dc.identifierEur.Phys.J.A31:698-700,2007
dc.identifierdoi:10.1140/epja/i2006-10269-3
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/176632
dc.subjectHigh Energy Physics - Phenomenology
dc.titleMultichannel calculation of the very narrow $D_{s0}^*(2317)$ and the very broad $D_0^*(2300-2400)$
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