Upper limit on the branching ratio for the decay. pi. sup 0 r arrow. nu. nu

Journal Article · Mon Apr 29 04:00:00 EDT 1991 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.66.2189· OSTI ID:5538945

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 (IA)
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) V6T 2A3

An experimental upper limit on the branching ratio for the decay {pi}{sup 0}{r arrow}{nu}{bar {nu}} is set at 8.3{times}10{sup {minus}7} (90% C.L.). This decay is forbidden if neutrinos are purely left handed. The limit also applies to any decays of the {pi}{sup 0} to weakly interacting neutrals.

• DOE Contract Number: AC02-76CH00016; W-7405-ENG-36; AC02-76ER03072
• OSTI ID: 5538945
• Journal Information: Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 66:17; ISSN 0031-9007; ISSN PRLTA
• Country of Publication: United States
• Language: English

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
ANTILEPTONS
ANTIMATTER
ANTINEUTRINOS
ANTIPARTICLES
BASIC INTERACTIONS
BNL
BOSONS
BRANCHING RATIO
DATA
DECAY
ELEMENTARY PARTICLES
EXPERIMENTAL DATA
FERMIONS
HADRONS
INFORMATION
INTERACTIONS
KAONS
KAONS PLUS
LEPTONIC DECAY
LEPTONS
LIMITING VALUES
MASS SPECTRA
MASSLESS PARTICLES
MATTER
MESONS
MONTE CARLO METHOD
NATIONAL ORGANIZATIONS
NEUTRINOS
NUMERICAL DATA
PARTICLE DECAY
PARTICLE IDENTIFICATION
PIONS
PIONS NEUTRAL
PSEUDOSCALAR MESONS
SPECTRA
STRANGE MESONS
STRANGE PARTICLES
US AEC
US DOE
US ERDA
US ORGANIZATIONS
WEAK INTERACTIONS
WEAK PARTICLE DECAY