The role of resonances in non-leptonic hyperon decays

Details The role of resonances in non-leptonic hyperon decays The role of resonances in non-leptonic hyperon decays

1999-02-15

arxiv.org/abs/hep-ph/9902351v1

Phys.Rev. D59 (1999) 094025

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, 2 figures

Scientific paper

10.1103/PhysRevD.59.094025

We examine the importance of resonances for the non-leptonic hyperon decays in the framework of chiral perturbation theory. Lower lying resonances are included into the effective theory. Integrating out the heavy degrees of freedom in the resonance saturation scheme generates higher order counterterms in the effective Lagrangian, providing an estimate of the pertinent coupling constants. A fit to the eight independent decay amplitudes that are not related by isospin symmetry is performed and reasonable agreement for both s- and p- waves is achieved.

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