Does the Sigma(1580)3/2- resonance exist?

Abstract

Precise new data for the reaction $K^{-}p\to {\pi }^0\Lambda$ are presented in the c.m. energy range 1565 to 1600 MeV. Our analysis of these data sheds new light on claims for the $\Sigma (1580){3/2}^{-}$ 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 figures

Cited by in corpus (7)

• Baryon spectroscopy
• Progress Toward Understanding Baryon Resonances
• Measurement of ${\pi }^0\Lambda$, ${\bar{K}}^{0}n$, and ${\pi }^0{\Sigma }^0$ production in $K^{-}p$ interactions for $p_{K^{-}}$ between 514 and 750 MeV/$c$
• Hyperon I: Partial wave amplitudes for $K^{-}p$ scattering
• Low energy reactions $K^{-}p\to {\Sigma }^0{\pi }^0$, $\Lambda {\pi }^0$, ${\bar{K}}^{0}n$ and the strangeness $S=-1$ hyperons
• Interpretation of strange hadron production at LHC
• Highlights of Crystal Ball Physics