Remarks on the f_0(400-1200) scalar meson as the dynamically generated chiral partner of the pion

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dc.creatorvan Beveren, Eef
dc.creatorKleefeld, Frieder
dc.creatorRupp, George
dc.creatorScadron, Michael D.
dc.date2002-04-12
dc.date.accessioned2026-07-07T10:33:02Z
dc.date.available2026-07-07T10:33:02Z
dc.descriptionThe quark-level linear sigma model is revisited, in particular concerning the identification of the f_0(400-1200) (or σ(600)) scalar meson as the chiral partner of the pion. We demonstrate the predictive power of the linear sigma model through the pi-pi and pi-N s-wave scattering lengths, as well as several electromagnetic, weak, and strong decays of pseudoscalar and vector mesons. The ease with which the data for these observables are reproduced in the linear sigma model lends credit to the necessity to include the sigma as a fundamental q\bar{q} degree of freedom, to be contrasted with approaches like chiral perturbation theory or the confining NJL model of Shakin and Wang.
dc.description15 pages, plain LaTeX, 3 EPS figures
dc.identifierhttps://arxiv.org/abs/hep-ph/0204139
dc.identifierhttp://arxiv.org/abs/hep-ph/0204139
dc.identifierMod.Phys.Lett.A17:1673,2002
dc.identifierdoi:10.1142/S0217732302007326
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/178965
dc.subjectHigh Energy Physics - Phenomenology
dc.titleRemarks on the f_0(400-1200) scalar meson as the dynamically generated chiral partner of the pion
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