2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/178132Precise new data for the reaction $K^- p \to π^0 Λ$ are presented in the c.m. energy range 1565 to 1600 MeV. Our analysis of these data sheds new light on claims for the $Σ(1580){3/2}^-$ 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.4 pages, 4 figuresNuclear Experimenttext