SU(3) Baryon Chiral Perturbation Theory and Long Distance Regularization

Details SU(3) Baryon Chiral Perturbation Theory and Long Distance Regularization SU(3) Baryon Chiral Perturbation Theory and Long Distance Regularization

1998-04-13

arxiv.org/abs/hep-ph/9804281v2

Phys.Rev.D59:036002,1999

Physics

High Energy Physics

High Energy Physics - Phenomenology

typos corrected and material added

Scientific paper

10.1103/PhysRevD.59.036002

The use of SU(3) chiral perturbation theory in the analysis of low energy meson-baryon interactions is discussed. It is emphasized that short distance effects, arising from propagation of Goldstone bosons over distances smaller than a typical hadronic size, are model-dependent and can lead to a lack of convergence in the SU(3) chiral expansion if they are included in loop diagrams. In this paper we demonstrate how to remove such effects in a chirally consistent fashion by use of a cutoff and demonstrate that such removal ameliorates problems which have arisen in previous calculations due to large loop effects.

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