Effective linear meson model

The effective action of the linear meson model generates the mesonic –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 and which are compatib...

Full description

Saved in:
Bibliographic Details
Published in:The European physical journal. C, Particles and fields Particles and fields, 1998-02, Vol.1 (3), p.669-710
Main Authors: Jungnickel, D.-U., Wetterich, C.
Format: Article
Language:English
Subjects:
Couplings
Decay rate
Mesons
Quarks
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The effective action of the linear meson model generates the mesonic –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 and which are compatible with observation. This involves a large momentum dependent – mixing angle which is different for the on–shell decays of the and the . We also present relations for the masses of the 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 – mixing encountered in the linear meson model.
ISSN:1434-6044
1434-6052
DOI:10.1007/s100520050115