Spin Asymmetry Parameter Research Articles

Measurement of the angular correlation parameters in the beta decay of polarised Λ hyperons

From a final sample of 544 polarized Lambda to pe nu events, the authors obtain Av=0.72+or-0.12, Ae=0.05+or-0.12 and Ap=-0.47+or-0.12 for the three spin asymmetry parameters, and Ae nu =0.07+or-0.12 for the electron-neutrino correlation. The lepton plane correlation with the Lambda spin, D=0.11+or-0.20, is consistent with no violation of time reversal invariance.