Abstract:A dispersive representation based on unitarity and analyticity is used to study the low energy πΎπ β ππ and πΎ * π β ππ partial wave amplitudes. Final state interactions of the ππ system are critical to this analysis. The left-hand cut contribution is estimated by invoking baryon chiral perturbation theory results, while the right-hand cut contribution responsible for final state interaction effects is taken into account via an OmnΓ¨s formalism with elastic phase shifts as input. It is found that a good… Show more
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