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Measurement of the branching ratio of the decay K sub L sup 0 r arrow. mu. mu

Journal Article · · Physical Review Letters; (United States)
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  1. Department of Physics, Tohoku University, Sendai 980, Japan Department of Physics, University of Tokyo, Tokyo 113 (Japan) Department of Physics, Kyoto University, Kyoto 606, Japan National Laboratory for High Energy Physics, (KEK), Tsukuba, 305 (Japan)
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We observed 117.8 {ital K}{sub {ital L}}{sup 0}{r arrow}{mu}{mu} events after background subtraction of 1.2 events in an experiment to search for the deays {ital K}{sub {ital L}}{sup 0}{r arrow}{mu}{ital e} and {ital ee} at the KEK 12-GeV Proton Synchrotron. Normalizing to the decay {ital K}{sub {ital L}}{sup 0}{r arrow}{pi}{sup +}{pi}{sup {minus}}, the branching ratio {ital B}({ital K}{sub {ital L}}{sup 0}{r arrow}{mu}{mu})=(7.9{plus minus}0.6(stat){plus minus}0.3 (syste)){times}10{sup {minus}9} was obtained.
OSTI ID:
5044132
Journal Information:
Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 67:19; ISSN PRLTA; ISSN 0031-9007
Country of Publication:
United States
Language:
English

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Related Subjects

645101* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Electromagnetic Interactions & Properties
645102 -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR DISTRIBUTION
BASIC INTERACTIONS
BOSONS
BRANCHING RATIO
CHARGED PARTICLE DETECTION
DATA
DATA ANALYSIS
DECAY
DETECTION
DISTRIBUTION
ELEMENTARY PARTICLES
EXPERIMENTAL DATA
HADRONS
INFORMATION
INTERACTIONS
KAONS
KAONS NEUTRAL
KAONS NEUTRAL SHORT-LIVED
LEPTONIC DECAY
MASS SPECTRA
MESONS
MUON DETECTION
NUMERICAL DATA
PARTICLE DECAY
PSEUDOSCALAR MESONS
RADIATION DETECTION
SPECTRA
STRANGE MESONS
STRANGE PARTICLES
WEAK INTERACTIONS
WEAK PARTICLE DECAY