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Paper detail

The Linear Meson Model and Chiral Perturbation Theory

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.

preprint1997arXivOpen access
Dirk-U. JungnickelC. Wetterich
hep-phnucl-th
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Dirk-U. JungnickelC. Wetterich

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