Modified Breit-Wigner formula for mesonic resonances describing OZI decays of confined $q\bar{q}$ states and the light scalar mesons

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dc.creatorvan Beveren, Eef
dc.creatorRupp, George
dc.date2001-06-20
dc.date2001-11-06
dc.date.accessioned2026-07-07T11:30:14Z
dc.date.available2026-07-07T11:30:14Z
dc.descriptionA general expression resembling Breit-Wigner formulae is derived for the description of resonances which appear in meson-meson scattering. Starting point is a unitarised meson model, but reduced to a simpler form and freed from the specific assumption about the confining force. The parameters of the resulting ``Resonance-Spectrum Expansion'' are directly related to the confinement spectrum and the mechanism of $^3P_0$ valence-quark-pair creation for OZI-allowed hadronic decay, and not to the central positions and widths of resonances. The method also provides a straightforward explanation for the origin of the light scalar mesons without requiring extra degrees of freedom.
dc.description21 pages, 6 figures included. v2, new figures with respect to the movement of singularities in the complex energy plane. Discussion on model dependence included. More references included. v3/4 extension acknowledgements. v5, correction misspelling in citation to Karabarbounis and Shaw's work
dc.identifierhttps://arxiv.org/abs/hep-ex/0106077
dc.identifierhttp://arxiv.org/abs/hep-ex/0106077
dc.identifierEur.Phys.J.C22:493-501,2001
dc.identifierdoi:10.1007/s100520100823
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/196954
dc.subjectHigh Energy Physics - Experiment
dc.subjectHigh Energy Physics - Phenomenology
dc.titleModified Breit-Wigner formula for mesonic resonances describing OZI decays of confined $q\bar{q}$ states and the light scalar mesons
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