nu. sub. mu. -. nu. sub e universality in charged-current neutrino interactions

Journal Article · Tue May 01 04:00:00 EDT 1990 · Physical Review, D (Particles Fields); (USA)

DOI:https://doi.org/10.1103/PhysRevD.41.2653· OSTI ID:6768676

Baker, N J; Kahn, S A; Murtagh, M J; Samios, N P; Tanaka, M ^[1]; Baltay, C; Hyatt, E R; Manly, S; Steiner, R ^[2]; Jacques, P F; Kalelkar, M; Plano, R J; Stamer, P E ^[3]

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1. Brookhaven National Laboratory, Upton, New York 11973 (USA)
2. Columbia University, New York, NY (USA)
3. Rutgers University, New Brunswick, NJ (USA)

A total of 1403 {nu}{sub {ital e}} and 179 {bar {nu}}{sub {ital e}} charged-current interactions with energies ranging up to 200 GeV were observed in a wideband neutrino-beam experiment using the Fermilab 15-ft bubble chamber filled with a heavy Ne-H{sub 2} mix. As a test of {nu}{sub {mu}}-{nu}{sub {ital e}} universality, these events were compared to samples of {nu}{sub {mu}} and {bar {nu}}{sub {mu}} charged-current events obtained during the same experiment. The {nu}{sub {ital e}}-to-{nu}{sub {mu}} cross-section ratio was measured to be 1.09{plus minus}0.17, and the corresponding ratio for antineutrinos was 1.46{plus minus}0.34. Kinematic distributions and charged-particle multiplicities were also consistent with universality. The neutral-strange-particle production rate was measured to be (11.7{plus minus}1.2)% for {nu}{sub {ital e}} and (5.2{plus minus}2.2)% for {bar {nu}}{sub {ital e}}, in good agreement with the {nu}{sub {mu}} and {bar {nu}}{sub {mu}} rates. The relative rate for {ital e}{sup {minus}}{ital e}{sup +} dilepton production by {nu}{sub {ital e}} was (0.82{plus minus}0.47)%, also consistent with universality. The rate for neutral-strange-particle production in {ital e}{sup {minus}}{ital e}{sup +} dilepton events is reported for the first time. The measured rate of 0.64{plus minus}0.45 agrees with the value expected from universality.

• OSTI ID: 6768676
• Journal Information: Physical Review, D (Particles Fields); (USA), Journal Name: Physical Review, D (Particles Fields); (USA) Vol. 41:9; 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
ANTINEUTRINOS
ANTIPARTICLES
BUBBLE CHAMBERS
CHARGED-CURRENT INTERACTIONS
CROSS SECTIONS
ELECTRON NEUTRINOS
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
GAS TRACK DETECTORS
INTERACTIONS
LEPTONS
MASSLESS PARTICLES
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
MULTIPLICITY
MUON NEUTRINOS
NEUTRINOS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
POSITRONS
RADIATION DETECTORS
STANDARD MODEL
STRANGE PARTICLES
UNIFIED GAUGE MODELS