Phys. Rev. D 58, 072002 (1998) [12 pages]Measurement of the properties of the Ω̅ + and Ω- hyperonsReceived 26 March 1998; published 20 August 1998 We have analyzed Ω̅ + and Ω- events produced in the inclusive reaction p+Be→Ω+X and have measured some properties of the Ω̅ + and Ω- hyperons via the decay Ω⃗ΛK⃗pπK. The measured Ω̅ + lifetime was τΩ̅ =(0.823±0.038)×10-10 s (χ2/NDF=1.52), and the measured decay parameter was αΩ̅ =0.017±0.077 (χ2/NDF=1.74). The corresponding values for the Ω- were τΩ=(0.817±0.022)×10-10 s (χ2/NDF=1.17) and αΩ=-0.028±0.047 (χ2/NDF=1.49). In addition, the measurement of the normalized mass difference between the Ω̅ + and Ω- yielded ΔMΩ/MΩ=(1.44±7.98)×10-5. The measurements were all in good agreement with CPT invariance. © 1998 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.58.072002
DOI:
10.1103/PhysRevD.58.072002
PACS:
14.20.Jn, 13.30.-a
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