Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2001-05-11
Physics
High Energy Physics
High Energy Physics - Experiment
to be published in the Proceedings of the XXXVIth Rencontres de Moriond, Electroweak Interactions And Unified Theories, March
Scientific paper
In the standard model of electroweak interactions the positrons from the decay of polarized positive muons are mainly longitudinally polarized. The measurement of the two transverse polarization components PT1 and PT2 is a sensitive tool to look for contributions from additional, exotic interactions. The energy dependence of PT1 yields the low energy Michel parameter eta and thus an improved model-independent value of the Fermi coupling constant. A non-zero value PT2 would be the first observation of time reversal violation in a purely leptonic decay. The muon decay experiment at the Paul Scherrer Institut is the first experiment to measure all three positron polarization components, PT1, PT2, and the longitudinal polarization component PL. In this contribution results from a small data-sample taken in 1999 are presented. The values obtained are PT1 = (5 +- 16)*10^(-3), PT2 = (1 +- 16)*10^(-3), and PL = 1.09 +- 0.15. More than ten times more data was taken in October/November 2000, the analysis of which will further reduce the statistical errors.
No associations
LandOfFree
Determination Of The Polarization Vector Of Positrons From The Decay Of Polarized Muons does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Determination Of The Polarization Vector Of Positrons From The Decay Of Polarized Muons, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Determination Of The Polarization Vector Of Positrons From The Decay Of Polarized Muons will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-127579