Higher-statistics measurement of the branching ratio for the decay K sub L sup 0 r arrow. mu. mu
Journal Article
·
· Physical Review, D (Particles Fields); (USA)
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- University of California, Irvine, California 92717 (USA)
- University of California, Los Angeles, California 90024 (USA)
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (USA)
- University of Pennsylvania, Philadelphia, Pennsylvania 19104 (USA)
- Stanford University, Stanford, California 94309 (USA)
- Temple University, Philadelphia, Pennsylvania 19122 (USA)
- University of Texas, Austin, Texas 78712 (USA)
With a significant increase in experimental sensitivity, we have observed an additional 281 {ital K}{sub {ital L}}{sup 0}{r arrow}{mu}{mu} events after a background subtraction of 19{plus minus}6 events. Normalizing this sample to the simultaneous observation of the decay {ital K}{sub {ital L}}{sup 0}{r arrow}{pi}{sup +}{pi}{sup {minus}}, we obtain the branching ratio {ital B}({ital K}{sub {ital L}}{sup 0}{r arrow}{mu}{mu})=(7.6{plus minus}0.5(stat){plus minus}0.4(syst)){times}10{sup {minus}9}. Combining these data with our previously published sample containing 87 events yields {ital B}({ital K}{sub {ital L}}{sup 0}{r arrow}{mu}{mu})=(7.0{plus minus}0.5){times}10{sup {minus}9}.
- OSTI ID:
- 5538934
- Journal Information:
- Physical Review, D (Particles Fields); (USA), Journal Name: Physical Review, D (Particles Fields); (USA) Vol. 44:1; ISSN PRVDA; ISSN 0556-2821
- 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
ACCURACY
BASIC INTERACTIONS
BOSONS
BRANCHING RATIO
DECAY
ELEMENTARY PARTICLES
HADRONS
INTERACTIONS
KAONS
KAONS NEUTRAL
LEPTONIC DECAY
MESONS
PARTICLE DECAY
PSEUDOSCALAR MESONS
STRANGE MESONS
STRANGE PARTICLES
WEAK INTERACTIONS
WEAK PARTICLE DECAY
645102* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCURACY
BASIC INTERACTIONS
BOSONS
BRANCHING RATIO
DECAY
ELEMENTARY PARTICLES
HADRONS
INTERACTIONS
KAONS
KAONS NEUTRAL
LEPTONIC DECAY
MESONS
PARTICLE DECAY
PSEUDOSCALAR MESONS
STRANGE MESONS
STRANGE PARTICLES
WEAK INTERACTIONS
WEAK PARTICLE DECAY