Study of low-energy antineutrino interactions on protons

Journal Article · Fri Feb 01 04:00:00 EST 1980 · Phys. Rev., D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.21.562· OSTI ID:5534830

Fanourakis, G; Resvanis, L K; Grammatikakis, G; Tsilimigras, P; Vayaki, A; Camerini, U; Fry, W F; Loveless, R J; Mapp, J H; Reeder, D D

We present a study of antineutrino interactions in hydrogen obtained in a 138 000-picture run at the BNL 7-ft bubble chamber. The antineutrino beam had an energy distribution that peaked at approx. 1.1 GeV. The cross section measured for charged-currect interactions is sigma (nu-barp ..-->.. ..mu../sup +/+anything) = (0.32 +- 0.08) x 10/sup -38/ x (E/sub nu-bar/ (GeV)) cm/sup 2/. The neutral-current cross section is sigma (nu-barp ..-->.. nu-barp..pi../sup +/..pi../sup -/) =5.5/sup +4.4//sub -2.6/ x 10/sup -40/ cm/sup 2/. The ratio of strangeness-changing to non-strangeness-changing charged currents is R/sub s/=0.06/sup +0.13//sub -0.05/. An upper limit determined for charm production is sigma/sub c/<3.8 x 10/sup -40/ cm/sup 2/ at the 90% confidence level. From the momentum-transfer distribution we measure average Q/sup 2/ for inelastic charged-current events with energy greater than 2 GeV, = (0.10 +- 0.03)(E/sub nu-bar/ (GeV))+(0.10 +- 0.09) (GeV/c)/sup 2/. Using a maximum-likelihood method we determine from the quasielastic events nu-barp ..-->.. ..mu../sup +/n an axial-vector mass M/sub A/=0.9/sup +0.4//sub -0.3/ GeV/c/sup 2/.

• Research Organization: Physics Laboratory, University of Athens, Athens 144, Greece
• OSTI ID: 5534830
• Journal Information: Phys. Rev., D; (United States), Journal Name: Phys. Rev., D; (United States) Vol. 21:3; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645102* -- High Energy Physics-- Particle Interactions &amp; Properties-Experimental-- Weak Interactions &amp; Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTILEPTON-PROTON INTERACTIONS
ANTILEPTONS
ANTIMATTER
ANTINEUTRINO-NUCLEON INTERACTIONS
ANTINEUTRINO-PROTON INTERACTIONS
ANTIPARTICLES
BUBBLE CHAMBERS
CHARGED-CURRENT INTERACTIONS
CHARM PARTICLES
CROSS SECTIONS
CRYOGENIC FLUIDS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
ENERGY SPECTRA
FERMIONS
FLUIDS
GAS TRACK DETECTORS
GEV RANGE
GEV RANGE 01-10
HYDROGEN
INELASTIC SCATTERING
INTERACTIONS
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
LEPTON-PROTON INTERACTIONS
LEPTONS
MEASURING INSTRUMENTS
MOMENTUM TRANSFER
MUONS
MUONS PLUS
NEUTRAL-CURRENT INTERACTIONS
NEUTRINO-NUCLEON INTERACTIONS
NEUTRINO-PROTON INTERACTIONS
NONMETALS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
POSTULATED PARTICLES
RADIATION DETECTORS
SCATTERING
SPECTRA