Final state interactions in nonleptonic hyperon decays

Details Final state interactions in nonleptonic hyperon decays Final state interactions in nonleptonic hyperon decays

2003-06-19

arxiv.org/abs/hep-ph/0306175v1

Phys.Rev. D67 (2003) 114016

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 4 figures

Scientific paper

10.1103/PhysRevD.67.114016

We investigate the importance of final state interactions in weak nonleptonic hyperon decays within a relativistic chiral unitary approach based on coupled channels. The effective potentials for meson-baryon scattering are derived from a chiral effective Lagrangian and iterated in a Bethe-Salpeter equation, which generates the low lying baryon resonances dynamically. The inclusion of final state interactions decreases the discrepancy between theory and experiment for both s and p waves. Our study indicates that contributions from higher order terms of the weak effective Lagrangian may play an important role in these decays.

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