Nature of thef0(600)Scalar Meson from itsNcDependence at Two Loops in Unitarized Chiral Perturbation Theory | Zendy

J. R. Peláez | Zendy; G. Ríos | Zendy

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Nature of thef0(600)Scalar Meson from itsNcDependence at Two Loops in Unitarized Chiral Perturbation Theory

Author(s) -

J. R. Peláez,

G. Ríos

Publication year - 2006

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.97.242002

Subject(s) - physics , scalar (mathematics) , chiral perturbation theory , pion , particle physics , component (thermodynamics) , scattering , mathematical physics , quantum mechanics , geometry , mathematics

By using unitarized two-loop Chiral Perturbation Theory partial waves todescribe pion-pion scattering we find that the dominant component of thelightest scalar meson does not follow the q-qbar dependence on the number ofcolors that, in contrast, is obeyed by the lightest vectors. The methodsuggests that a subdominant q-qbar component of the f_0(600) possiblyoriginates around 1 GeV.Comment: 4 pages, 1 Figure. To appear in Phys. Rev. Let

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