a High Statistics Study of Lambda Beta Decay.
Abstract
A sample of 55,752 lambda beta decays has been detected in the Fermilab Neutral Hyperon Beam. A synchrotron radiation detector and a lead glass array together provided a rejection factor in excess of 10('4) against the non leptonic lambda decay mode. The ratio of the axial vector to vector coupling constants in lambda beta decay has been determined. The values obtained are 0.757 (+OR) 0.019 and +0.777 (+OR) 0.019, where the errors are purely statistical. The systematic uncertainty presently assigned to each of these values is (+OR)0.080; work is in progress to improve their accuracy. The branching ratio for lambda beta decay has also been measured. The result is (8.15 (+OR) 0.69) x 10('4), where the systematic uncertainty has been included in the error.
 Publication:

Ph.D. Thesis
 Pub Date:
 1983
 Bibcode:
 1983PhDT........35D
 Keywords:

 Physics: Elementary Particles and High Energy