NJL model with infrared confinement

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We consider an extended Nambu--Jona-Lasinio (NJL) model for the light meson sector of QCD where unphysical quark production thresholds are excluded by an infrared cut-off on the momentum integration within quark loop diagrams. This chiral quark model conserves the low energy theorems. The infrared cut-off is fixed selfconsistently by the dynamically generated quark mass (quark condensate). The masses and decay widths of the σ- and ρ-mesons are described in the model.
LaTeX, 12 pages, 3 figures, 1 table

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High Energy Physics - Phenomenology

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http://salesiana.dossiersoluciones.com/handle/123456789/48646

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/hep-ph/9812503
 http://arxiv.org/abs/hep-ph/9812503

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arXiv