The TWIST Collaboration has measured the Michel parameter rho in normal muon
decay,u+ -> e+VeVu. In the standard model of particle physics,rho = 3/4. Deviations
from this value require mixing of left- and right-handed muon and electron couplings in
the muon-decay Lagrangian. We find rho = 0:75080+-0:00032(stat.)+-0:00097(syst.) +- 0:00023, where the last uncertainty represents the dependence of rho on the Michel
parameter n. This result sets new limits on the WL - WR mixing angle in left-right
symmetric models.
| Identifer | oai:union.ndltd.org:tamu.edu/oai:repository.tamu.edu:1969.1/3297 |
| Date | 12 April 2006 |
| Creators | Musser, James Raymond |
| Contributors | Gagliardi, Carl |
| Publisher | Texas A&M University |
| Source Sets | Texas A and M University |
| Language | en_US |
| Detected Language | English |
| Type | Book, Thesis, Electronic Dissertation, text |
| Format | 2944259 bytes, electronic, application/pdf, born digital |
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