Light scalars as tetraquarks or two-meson states from large Nc and unitarized Chiral Perturbation Theory

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dc.creatorPelaez, J. R.
dc.date2004-11-08
dc.date.accessioned2026-07-07T10:29:18Z
dc.date.available2026-07-07T10:29:18Z
dc.descriptionBy means of unitarized Chiral Perturbation Theory it is possible to obtain a remarkable description of meson-meson scattering amplitudes up to 1.2 GeV, and generate poles associated to scalar and vector resonances. Since Chiral Perturbation Theory is the QCD low energy effective theory, it is possible then to study its large Nc limit where qqbar states are easily identified. The vectors thus generated follow closely a qqbar behavior, whereas the light scalar poles follow the large Nc behavior expected for a dominant tetraquark or two-meson structure.
dc.descriptionInvited Brief Report to appear in Modern Physcis Letters A. 15 pages
dc.identifierhttps://arxiv.org/abs/hep-ph/0411107
dc.identifierhttp://arxiv.org/abs/hep-ph/0411107
dc.identifierMod.Phys.Lett.A19:2879-2894,2004
dc.identifierdoi:10.1142/S0217732304016160
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/177752
dc.subjectHigh Energy Physics - Phenomenology
dc.titleLight scalars as tetraquarks or two-meson states from large Nc and unitarized Chiral Perturbation Theory
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