Measurement of the Alpha Asymmetry Parameter for the Omega- to Lambda K- Decay

Details Measurement of the Alpha Asymmetry Parameter for the Omega- to Lambda K- Decay Measurement of the Alpha Asymmetry Parameter for the Omega- to Lambda K- Decay

2005-02-25

arxiv.org/abs/hep-ex/0502043v1

Phys.Rev.D71:051102,2005

Physics

High Energy Physics

High Energy Physics - Experiment

5 pages, 4 figures, to be appeared as a Rapid Communication in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.71.051102

We have measured the alpha parameter of the Omega- to Lambda K- decay using data collected with the HyperCP spectrometer during the 1997 fixed-target run at Fermilab. Analyzing a sample of 0.96 million Omega- to Lambda K^-, Lambda to p pi- decays, we obtain alpha_Omega*alpha_Lambda = [1.33+/-0.33(stat)+/-0.52(syst)] x 10^{-2}. With the accepted value of alpha_Lambda, alpha_Omega is found to be [2.07+/-0.51(stat)+/-0.81(syst)] x 10^{-2}.

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