High sensitivity tests of the standard model for electroweak interactions. [Lepton-family-number-violating decay; Michel [rho] parameter]
The work done on this project was focused on two LAMPF experiments. The MEGA experiment, a high-sensitivity search for the lepton-family-number-violating decay [mu] [yields] e [gamma] to a sensitivity which, measured in terms of the branching ratio, BR = [[mu] [yields] e [gamma]]/[[mu] [yields] ev[sub [mu]] v[sub e]] [approximately] 10[sup [minus]13], is over two orders of magnitude better than previously reported values. The second is a precision measurement of the Michel [rho] parameter from the positron energy spectrum of [mu] [yields] ev[sub [mu]] v[sub e] to test the V-A theory of weak interactions. The uncertainty in the measurement of the Michel [rho] parameter is expected to be a factor of three lower than the present reported value.
- Research Organization:
- Valparaiso Univ., IN (United States). Dept. of Physics and Astronomy
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG02-88ER40416
- OSTI ID:
- 6832260
- Report Number(s):
- DOE/ER/40416-5; ON: DE93006186
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
662210 -- Specific Theories & Interaction Models
662370* -- Decays of Leptons-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
BASIC INTERACTIONS
BOSONS
DECAY
DOCUMENT TYPES
ELECTRON NEUTRINOS
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
INTERACTIONS
LEPTONIC DECAY
LEPTONS
MASSLESS PARTICLES
MATHEMATICAL MODELS
MATTER
MEASURING INSTRUMENTS
MULTIWIRE PROPORTIONAL CHAMBERS
MUON NEUTRINOS
MUONS
MUONS PLUS
NEUTRINOS
PARTICLE DECAY
PARTICLE MODELS
PHOTONS
POSITRONS
PROGRESS REPORT
PROPORTIONAL COUNTERS
Pa
Particle Systematics-- Unified Theories & Models-- (1992-)
RADIATION DETECTORS
STANDARD MODEL
TESTING
UNIFIED GAUGE MODELS
WEAK INTERACTIONS
WEAK PARTICLE DECAY
662370* -- Decays of Leptons-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
BASIC INTERACTIONS
BOSONS
DECAY
DOCUMENT TYPES
ELECTRON NEUTRINOS
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
INTERACTIONS
LEPTONIC DECAY
LEPTONS
MASSLESS PARTICLES
MATHEMATICAL MODELS
MATTER
MEASURING INSTRUMENTS
MULTIWIRE PROPORTIONAL CHAMBERS
MUON NEUTRINOS
MUONS
MUONS PLUS
NEUTRINOS
PARTICLE DECAY
PARTICLE MODELS
PHOTONS
POSITRONS
PROGRESS REPORT
PROPORTIONAL COUNTERS
Pa
Particle Systematics-- Unified Theories & Models-- (1992-)
RADIATION DETECTORS
STANDARD MODEL
TESTING
UNIFIED GAUGE MODELS
WEAK INTERACTIONS
WEAK PARTICLE DECAY