Searching for mixing of (. mu. /sup +/e/sup -/) and (. mu. /sup -/e/sup +/) with Fermi coupling strength

Journal Article · Mon Nov 07 04:00:00 EST 1988 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.61.2189· OSTI ID:6752076

Huber, T M; Beer, G A; Bowen, T; Fry, C A; Gelbart, Z; Halverson, P G; Janissen, A C; Kendall, K R; Kunselman, A R; Marshall, G M; others, and

A search is described for muonium (..mu../sup +/e/sup -/) conversion to antimuonium (..mu../sup -/e/sup +/) with a coupling strength approximately equal to that of the weak interaction. A silica powder target produced thermal muonium in vacuum. A unique sequence of radioactivity following the capture of a ..mu../sup -/ in tungsten was the signal for conversion. No events were seen, implying an upper limit on the effective four-fermion weak-coupling constant for conversion of 0.88G/sub F/ (90% confidence level), corresponding to a branching ratio of less than 2 x 10/sup -5/ with respect to normal muon decay.

• Research Organization: University of Wyoming, Laramie, Wyoming 82071
• OSTI ID: 6752076
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 61:19; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

645102* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
BASIC INTERACTIONS
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CAPTURE
CHALCOGENIDES
CHARGED-PARTICLE REACTIONS
CONFIGURATION MIXING
CYCLIC ACCELERATORS
CYCLOTRONS
DATA
DECAY
ELECTRONS
ELEMENTARY PARTICLES
ENERGY LEVELS
EVEN-EVEN NUCLEI
EXCITED STATES
EXPERIMENTAL DATA
FERMIONS
GAMMA SPECTRA
HEAVY NUCLEI
HOURS LIVING RADIOISOTOPES
INFORMATION
INTERACTIONS
ISOCHRONOUS CYCLOTRONS
ISOTOPES
LEPTON REACTIONS
LEPTONS
LIMITING VALUES
MINERALS
MUON REACTIONS
MUONIUM
MUONS
MUONS MINUS
MUONS PLUS
NUCLEAR DECAY
NUCLEAR REACTIONS
NUCLEI
NUMERICAL DATA
ODD-ODD NUCLEI
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
POSITRONS
RADIOISOTOPES
REFRACTORY METAL COMPOUNDS
SILICA
SILICON 28 TARGET
SILICON COMPOUNDS
SILICON OXIDES
SPECTRA
STABLE ISOTOPES
TANTALUM 184
TANTALUM ISOTOPES
TARGETS
TRANSITION ELEMENT COMPOUNDS
TRIUMF CYCLOTRON
TUNGSTEN 184
TUNGSTEN 184 TARGET
TUNGSTEN COMPOUNDS
TUNGSTEN ISOTOPES
TUNGSTEN OXIDES
WEAK INTERACTIONS