Search for K sub L sup 0 r arrow. mu. e and K sub L sup 0 r arrow ee decays
Journal Article
·
· Physical Review (Section) D: Particles and Fields; (USA)
- National Laboratory for High Energy Physics (KEK), Tsukuba, Ibaraki 305, Japan (JP)
We report on the present status of a search for the rare decays {ital K}{sub {ital L}}{sup 0}{r arrow}{mu}e and {ital K}{sub {ital L}}{sup 0}{r arrow}ee at the KEK 12-GeV Proton Synchrotron. We found no {ital K}{sub {ital L}}{sup 0}{r arrow}{mu}e or {ital K}{sub {ital L}}{sup 0}{r arrow}ee events and found 54 {ital K}{sub {ital L}}{sup 0}{r arrow}{mu}{mu} events. The upper limits of the {ital K}{sub {ital L}}{sup 0}{r arrow}{mu}e and {ital K}{sub {ital L}}{sup 0}{r arrow}ee branching ratios are {ital B}({ital K}{sub {ital L}}{sup 0}{r arrow}{mu}e){lt}4.3{times}10{sup {minus}10} and {ital B}({ital K}{sub {ital L}}{sup 0}{r arrow}ee){lt}5.6{times}10{sup {minus}10} at 90% confidence level. The 54 {ital K}{sub {ital L}}{sup 0}{r arrow}{mu}{mu} events correspond to an absolute branching ratio of (8.4{plus minus}1.1){times}10{sup {minus}9}.
- OSTI ID:
- 5593396
- Journal Information:
- Physical Review (Section) D: Particles and Fields; (USA), Journal Name: Physical Review (Section) D: Particles and Fields; (USA) Vol. 40:5; ISSN PRVDA; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
Similar Records
Search for the rare decays K sub L sup 0 r arrow. mu. e and K sub L sup 0 r arrow ee
Experimental study of the rare decays [ital K][sub [ital L]][sup 0][r arrow][mu][ital e], [ital K][sub [ital L]][sup 0][r arrow][ital ee], [ital K][sub [ital L]][sup 0][r arrow][mu][mu], and [ital K][sub [ital L]][sup 0][r arrow][ital eeee]
New experimental limits on K sub L sup 0 r arrow. mu. e and K sub L sup 0 r arrow ee branching ratios
Journal Article
·
Sun Nov 03 23:00:00 EST 1991
· Physical Review Letters; (United States)
·
OSTI ID:5044137
Experimental study of the rare decays [ital K][sub [ital L]][sup 0][r arrow][mu][ital e], [ital K][sub [ital L]][sup 0][r arrow][ital ee], [ital K][sub [ital L]][sup 0][r arrow][mu][mu], and [ital K][sub [ital L]][sup 0][r arrow][ital eeee]
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Tue Feb 28 23:00:00 EST 1995
· Physical Review, D (Particles Fields); (United States)
·
OSTI ID:6579763
New experimental limits on K sub L sup 0 r arrow. mu. e and K sub L sup 0 r arrow ee branching ratios
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Sun Nov 12 19:00:00 EST 1989
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OSTI ID:5149463
Related Subjects
645102* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
BASIC INTERACTIONS
BOSONS
BRANCHING RATIO
CYCLIC ACCELERATORS
DECAY
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
HADRONS
INTERACTIONS
KAONS
KAONS NEUTRAL
KAONS NEUTRAL LONG-LIVED
KEK SYNCHROTRON
LEPTONIC DECAY
LEPTONS
MESONS
MUONS
PARTICLE DECAY
PSEUDOSCALAR MESONS
STRANGE MESONS
STRANGE PARTICLES
SYNCHROTRONS
WEAK INTERACTIONS
WEAK PARTICLE DECAY
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
BASIC INTERACTIONS
BOSONS
BRANCHING RATIO
CYCLIC ACCELERATORS
DECAY
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
HADRONS
INTERACTIONS
KAONS
KAONS NEUTRAL
KAONS NEUTRAL LONG-LIVED
KEK SYNCHROTRON
LEPTONIC DECAY
LEPTONS
MESONS
MUONS
PARTICLE DECAY
PSEUDOSCALAR MESONS
STRANGE MESONS
STRANGE PARTICLES
SYNCHROTRONS
WEAK INTERACTIONS
WEAK PARTICLE DECAY