Recent Results on S = (-3) Baryon Spectroscopy from the LASS (Large Aperture Superconducting Solenoid) Spectrometer

摘要

Data demonstrating the existence of two omega (sup *)(minus) resonances produced in K(-) p interactions at 11 GeV/c in the LASS spectrometer are presented. The first state is seen in the xi (sup * degree minus) decay channel with mass 2253 +- 13 MeV/c sup 2 and width 81 +- 38 MeV/c sup 2 , and the second in the omega (-) pi(+) pi(-) system with mass 2474 +- 12 and width 72 +- 33 MeV/c sup 2 . Inclusive cross sections corresponding to these decays corrected for unseen charge modes are estimated to be respectively 630 +- 180 and 290 +- 90 nb, respectively. 10 refs., 16 figs., 1 tab.