Inclusive production of multistrange hyperons from 11-GeV/c K-p interactions

Large samples of inclusively produced Ξ-, Ω-, and Ξ0(1530) events are presented from a 1427 events/μb exposure of the large-aperture superconducting-solenoid spectrometer to an 11-GeV/c K- beam. Production characteristics of these states are compared with other data and shown to be consistent with h...
Ausführliche Beschreibung

Large samples of inclusively produced Ξ-, Ω-, and Ξ0(1530) events are presented from a 1427 events/μb exposure of the large-aperture superconducting-solenoid spectrometer to an 11-GeV/c K- beam. Production characteristics of these states are compared with other data and shown to be consistent with hyperon exchange. Polarization of Ξ- shows an increase in magnitude with both Feynman x and transverse momentum. The Ξ- decay parameters are measured to be αΞ=-0.40±0.03 and ΦΞ=(5±10)° . Results of searches for higher-mass hyperons are presented. The Ξ-(1820)→Ξ0(1530)π- decay is observed, while we fail to confirm the existence of the Σ+(3170). Ausführliche Beschreibung