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arXiv · hep-ph/0306175

Final state interactions in nonleptonic hyperon decays

B. Borasoy·E. Marco
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Abstract

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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B. Borasoy, E. Marco. 2003-06-19. Final state interactions in nonleptonic hyperon decays. https://doi.org/10.1103/physrevd.67.114016

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