Search for right-handed currents in muon decay
Limits are reported on right-handed currents, based on precise measurement of the e/sup +/ spetrum end point in ..mu../sup +/ decay. Highly polarized muons from the TRIUMF surface beam were stopped in metal foils within a 1.1 T spin-holding longitudinal field or a 70 G spin-precessing field. For the spin-held data, the V-A rate vanishes in the beam direction at the end point. Measurement of this sets the 90% confidence limits xi P/sub mu/delta/rho > 0.9959 and M(W/sub R/) > 380 GeV, where W/sub R/ is the possible right-handed gauge boson. The ..mu.. SR signal amplitude of the spin-precessed data independently sets the limits xi P/sub ..mu../delta/rho > 0.9918 and M(W/sub R/) > 320 GeV. Limits on non-(V-A) currents, familons, and composite leptons are also presented. 27 references.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 5336137
- Report Number(s):
- LBL-16736; CONF-8307109-3; ON: DE84002901
- Resource Relation:
- Conference: 11. SLAC summer institute conference on particle physics - dynamics and spectroscopy at high energy, Stanford, CA, USA, 18 Jul 1983
- Country of Publication:
- United States
- Language:
- English
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Search for right-handed currents in muon decay
Search for right-handed currents in muon decay
Related Subjects
MUONS PLUS
WEAK PARTICLE DECAY
ASYMMETRY
AXIAL-VECTOR CURRENTS
CHARGED CURRENTS
EXPERIMENTAL DATA
INTERMEDIATE VECTOR BOSONS
POLARIZED BEAMS
POSITRONS
V-A THEORY
WEINBERG-SALAM GAUGE MODEL
ALGEBRAIC CURRENTS
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
BEAMS
BOSONS
CURRENTS
DATA
DECAY
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
INFORMATION
INTERMEDIATE BOSONS
LEPTONS
MATHEMATICAL MODELS
MUONS
NUMERICAL DATA
PARTICLE DECAY
PARTICLE MODELS
POSTULATED PARTICLES
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES
645102* - High Energy Physics- Particle Interactions & Properties-Experimental- Weak Interactions & Properties