Search for the decay K sup + r arrow. pi. sup +. nu. nu

Journal Article · Mon Jan 01 04:00:00 EST 1990 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.64.21· OSTI ID:6981838

Atiya, M S; Chiang, I; Frank, J S; Haggerty, J S; Ito, M M; Kycia, T F; Li, K K; Littenberg, L S; Stevens, A; Strand, R C ^[1]; Louis, W C ^[2]; Akerib, D S; Marlow, D R; Meyers, P D; Selen, M A; Shoemaker, F C; Smith, A J.S. ^[3]; Azuelos, G; Blackmore, E W; Bryman, D A ; Felawka, L; Kitching, P; Kuno, Y; Macdonald, J A; Numao, T; Padley, P; Poutissou, J; Poutissou, R; Roy, J ^[4]

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1. Brookhaven National Laboratory, Upton, New York 11973 (USA)
2. Medium Energy Physics Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (USA)
3. Joseph Henry Laboratories, Princeton University, Princeton, New Jersey 08544 (USA)
4. TRIUMF, Vancouver, British Columbia, Canada V6T2A3 (CA)

An upper limit on the branching ratio for the decay {ital K}{sup +}{r arrow}{pi}{sup +}{nu}{bar {nu}} is set at 3.4{times}10{sup {minus}8} (90% C.L.). In addition, a 90%-C.L. upper limit of 6.4{times}10{sup {minus}9} is set on the branching ratio for decays of the form {ital K}{sup +}{r arrow}{pi}{sup +}{ital X}{sup 0}, where {ital X}{sup 0} is any massless, weakly interacting neutral particle. Limits are also set for the case where {ital M}{sub {ital X}{sup 0}}{gt}0.

• DOE Contract Number: AC02-76CH00016; W-7405-ENG-36; AC02-76ER03072
• OSTI ID: 6981838
• Journal Information: Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 64:1; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

645102* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties
645103 -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Interactions & Baryon & Meson Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
BOSONS
BRANCHING RATIO
BROOKHAVEN AGS
CYCLIC ACCELERATORS
DATA
DATA ANALYSIS
DECAY
ELEMENTARY PARTICLES
ENERGY RANGE
ERRORS
EXPERIMENTAL DATA
FERMIONS
HADRONS
HIGGS BOSONS
INFORMATION
KAONS
KAONS PLUS
LEPTONS
LIMITING VALUES
MASSLESS PARTICLES
MESONS
MEV RANGE
MEV RANGE 100-1000
NEUTRINOS
NUMERICAL DATA
PARTICLE DECAY
PARTICLE IDENTIFICATION
PARTICLE PRODUCTION
PARTICLE TRACKS
PIONS
PIONS PLUS
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
SEMILEPTONIC DECAY
STRANGE MESONS
STRANGE PARTICLES
SYNCHROTRONS
WEAK PARTICLE DECAY