The Extended Chiral Quark Model in a Tamm-Dancoff Inspired Approximation

Details The Extended Chiral Quark Model in a Tamm-Dancoff Inspired Approximation The Extended Chiral Quark Model in a Tamm-Dancoff Inspired Approximation

2000-12-11

arxiv.org/abs/hep-ph/0012117v1

Fizika B9 (2000) 181-196

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, LaTeX

Scientific paper

A procedure inspired by the Tamm-Dancoff method is applied to the chiral quark model which has been extended to include additional degrees of freedom: a pseudoscalar isoscalar field as well as a triplet of scalar isovector fields. The simpler, generic $\sigma$ -- model has been used before as a test for the Tamm-Dancoff inspired approximation (TDIA). The extended chirial quark model is employed here to investigate possible novel effects of the additional degrees of freedom as well as to point out the necessesity to introduce a SU(3) flavour. Model predictions for the axial-vector coupling constant and for the nucleon magnetic moment obtained in TDIA are compared with experimental values.

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