2018 Impact factor 4.843
Particles and Fields
Eur. Phys. J. C 2, 557-567
DOI 10.1007/s100529800704

The linear meson model and chiral perturbation theory

D.-U. Jungnickel - C. Wetterich

Institut für Theoretische Physik, Universität Heidelberg, Philosophenweg 16, D-69120 Heidelberg, Germany (e-mail:D.Jungnickel@thphys.uni-heidelberg.de, C.Wetterich@thphys.uni-heidelberg.de)

Received: 21 April 1997 / Published online: 20 February 1998

We compare the linear meson model and chiral perturbation theory in next to leading order in the quark mass expansion. In particular, we compute the couplings L4-L8 of chiral perturbation theory as functions of the parameters of the linear model. They are induced by the exchange of 0++ scalar mesons. We use a phenomenological analysis of the effective vertices of the linear model in terms of pseudoscalar meson masses and decay constants. Our results for the Li agree with previous phenomenological estimates.

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