The Linear Meson Model and Chiral Perturbation Theory

Details The Linear Meson Model and Chiral Perturbation Theory The Linear Meson Model and Chiral Perturbation Theory

1997-04-17

arxiv.org/abs/hep-ph/9704345v1

Eur.Phys.J.C2:557-567,1998

Physics

High Energy Physics

High Energy Physics - Phenomenology

21 pages, LaTeX

Scientific paper

10.1007/s100520050161

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 L_4--L_8 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 L_i agree with previous phenomenological estimates.

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