How Universal is the Coupling in the Sigma Model?

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We calculate pion-pion scattering lengths and sigma, rho and a1 decay widths from a gauged linear sigma model with two flavours and its globally invariant generalisation.
Presented at the workshop SCADRON 70 "Scalar Mesons and Related Topics" February 11-16, 2008, at IST in Lisbon, Portugal. 5 pages, 1 figure

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High Energy Physics - Phenomenology, Nuclear Theory

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http://salesiana.dossiersoluciones.com/handle/123456789/203486

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0804.3949
 http://arxiv.org/abs/0804.3949
 AIPConf.Proc.1030:160-164,2008
 doi:10.1063/1.2973492

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arXiv