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arXiv · hep-ph/9812503

NJL model with infrared confinement

D. Blaschke·G. Burau·M. K. Volkov·V. L. Yudichev
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Abstract

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.

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D. Blaschke, G. Burau, M. K. Volkov, V. L. Yudichev. 1998-12-25. NJL model with infrared confinement. https://arxiv.org/abs/hep-ph/9812503

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