Search for massive neutrinos in. pi. r arrow e. nu. decay

Journal Article · Sat Jun 01 04:00:00 EDT 1991 · Physical Review, D (Particles Fields); (USA)

DOI:https://doi.org/10.1103/PhysRevD.43.3611· OSTI ID:5466228

De Leener-Rosier, N; Deutsch, J; Lebrun, M; Naviliat-Cuncic, O; Prieels, R ^[1]; Amsler, C; van Elmbt, L; Schaad, M; Truoel, P ^[2]; Joseph, C; Perroud, J P; Tran, M T ^[3]

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1. Institut de Physique Nucleaire, Universite Catholique de Louvain, Chemin du Cyclotron, 2, B-1348 Louvain-la Neuve (Belgium)
2. Physik-Institut der Universitaet Zuerich, Schoenberggasse, 9, CH-8001, Zurich (Switzerland)
3. Institut de Physique Nucleaire, Universite de Lausanne, Dorigny, CH-1010 Lausanne (Switzerland)

We describe the details of an experiment designed to search for the admixture of massive neutrinos into electron-flavor neutrinos by observation with high resolution of the positron momentum spectrum in {pi}{r arrow}{ital e}+{nu} decay. No indication was found for such an admixture and the corresponding mixing amplitude was constrained below the {ital U}{sub {ital e}{ital i}}{sup 2}{le}10{sup {minus}6} region for neutrinos of {similar to}30 MeV/{ital c}{sup 2} mass.

• OSTI ID: 5466228
• Journal Information: Physical Review, D (Particles Fields); (USA), Journal Name: Physical Review, D (Particles Fields); (USA) Vol. 43:11; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

645102* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
BASIC INTERACTIONS
BOSONS
BRANCHING RATIO
COMPOSITE MODELS
DECAY
EIGENSTATES
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
FLAVOR MODEL
HADRONS
HELICITY
INTERACTIONS
LEPTONIC DECAY
LEPTONS
MASS
MASSLESS PARTICLES
MATHEMATICAL MODELS
MATTER
MESONS
NEUTRINOS
PARTICLE DECAY
PARTICLE IDENTIFICATION
PARTICLE MODELS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PIONS
POSITRONS
PSEUDOSCALAR MESONS
QUARK MODEL
STANDARD MODEL
UNIFIED GAUGE MODELS
WEAK INTERACTIONS
WEAK PARTICLE DECAY