Does the Sigma(1580)3/2- resonance exist?
Abstract
Precise new data for the reaction K- p π0 are presented in the c.m. energy range 1565 to 1600 MeV. Our analysis of these data sheds new light on claims for the (1580)3/2- resonance, which (if it exists with the specified quantum numbers) must be an exotic baryon because of its very low mass. Our results show no evidence for this state.
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