First observation of the Xi- pi+ decay mode of the Xi0(1690) hyperon

Abstract

We report the first observation of the Xi- pi+ decay mode of the Xi0(1690), confirming the existence of this resonance. The Xi0(1690) were produced by Sigma- of 345 Gev/c mean momentum in copper and carbon targets. The mass and width are close to those observed earlier for the Xi-(1690) in the Lambda K- decay channel. The product of inclusive production cross section and branching ratio is given relative to that of the Xi0(1530).

arXiv comment6 pages, Latex, 1 eps figure

Cited by in corpus (12)

• Theoretical study of the Xi(1620) and Xi(1690) resonances in Xi_c -> pi^+ MB decays
• Photoproduction of Xi off nucleons
• Observation of $\Xi (1620{)}^0$ and evidence for $\Xi (1690{)}^0$ in ${\Xi }_c^{+}\to {\Xi }^{-}{\pi }^{+}{\pi }^{+}$ decays
• Cascade production in the reactions gamma p --> K+ K+ (X) and gamma p --> K^+ K^+ pi- (X)
• Measurement of the Spin of the Xi(1530) Resonance
• Search for the exotic ${\Xi }^{--}(1860)$ Resonance in 340GeV/c ${\Sigma }^{-}$-Nucleus Interactions
• Exclusive Photoproduction of the Cascade (Xi) Hyperons
• Are there S=-2 Pentaquarks?
• $\Xi (1690)$ as a $\bar{K}\Sigma$ molecular state
• Measurements of $\psi (3686)\to K^{-}\Lambda {\bar{\Xi }}^{+}+c.c.$ and $\psi (3686)\to \gamma K^{-}\Lambda {\bar{\Xi }}^{+}+c.c$
• Study of Xi Photoproduction from Threshold to W = 3.3 GeV
• Dynamically Generated $\Xi (1690)$