Measurement Of The Angular Correlation Parameters In The Beta Decay Of Polarized Lambda Hyperons

Download or read book Measurement of the Angular Correlation Parameters in the BETA Decay of Polarized. Lambda. Hyperons written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Final results are presented from an experimental investigation of the .beta. decay of polarized .lambda. hyperons with a large-aperture magnetic spectrometer. The data sample consists of 544 events. The values A/sub .nu./ = 0.72 +- 0.12, A/sub e/ = 0.05 +- 0.12, and A/sub p/ = -0.47 +- 0.12 are obtained for the three spin asymmetry parameters, and A/sub e.nu./ = 0.07 +- 0.12 for the electron-neutrino correlation. The lepton-plane correlation with the .lambda. spin, D = 0.11 +- 0.20, is consistent with no violation of time reversal invariance. The data yield an axial vector to vector form factor ratio of g1/f1 = 0.53/sub -0.09//sup +0.11/. The Cabibbo model value is g1/f1 = 0.71.