Effective linear meson model

Details Effective linear meson model Effective linear meson model

1996-06-29

arxiv.org/abs/hep-ph/9606483v1

Eur.Phys.J.C1:669-710,1998

Physics

High Energy Physics

High Energy Physics - Phenomenology

79 pages, including 3 abstracts, 9 tables and 9 postscript figures, LaTeX, requires epsf.sty

Scientific paper

10.1007/s100520050115

The effective action of the linear meson model generates the mesonic n-point functions with all quantum effects included. Based on chiral symmetry and a systematic quark mass expansion we derive relations between meson masses and decay constants. The model ``predicts'' values for f_eta and f_eta' which are compatible with observation. This involves a large momentum dependent eta-eta' mixing angle which is different for the on--shell decays of the eta and the eta'. We also present relations for the masses of the 0^{++} octet. The parameters of the linear meson model are computed and related to cubic and quartic couplings among pseudoscalar and scalar mesons. We also discuss extensions for vector and axialvector fields. In a good approximation the exchange of these fields is responsible for the important nonminimal kinetic terms and the eta-eta' mixing encountered in the linear meson model.

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