Observation of Parity Violation in the Omega-minus -> Lambda + K-minus Decay

Details Observation of Parity Violation in the Omega-minus -> Lambda + K-minus Decay Observation of Parity Violation in the Omega-minus -> Lambda + K-minus Decay

2005-05-06

arxiv.org/abs/hep-ex/0505010v1

Phys.Lett.B617:11-17,2005

Physics

High Energy Physics

High Energy Physics - Experiment

10 pages, 7 figures

Scientific paper

10.1016/j.physletb.2005.04.067

The alpha decay parameter in the process Omega-minus -> Lambda + K-minus has been measured from a sample of 4.50 million unpolarized Omega-minus decays recorded by the HyperCP (E871) experiment at Fermilab and found to be [1.78 +/- 0.19(stat) +/- 0.16(syst)]{\times}10^{-2}. This is the first unambiguous evidence for a nonzero alpha decay parameter, and hence parity violation, in the Omega-minus -> Lambda + K-minus decay.

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