Study of low-energy antineutrino interactions on protons
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), Vol. 21:3
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ANTINEUTRINO-PROTON INTERACTIONS
CHARGED-CURRENT INTERACTIONS
MUONS PLUS
PARTICLE PRODUCTION
BUBBLE CHAMBERS
CHARM PARTICLES
CROSS SECTIONS
ENERGY SPECTRA
GEV RANGE 01-10
HYDROGEN
INELASTIC SCATTERING
MOMENTUM TRANSFER
NEUTRAL-CURRENT INTERACTIONS
ANTILEPTON-PROTON INTERACTIONS
ANTILEPTONS
ANTIMATTER
ANTINEUTRINO-NUCLEON INTERACTIONS
ANTIPARTICLES
CRYOGENIC FLUIDS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
FERMIONS
FLUIDS
GAS TRACK DETECTORS
GEV RANGE
INTERACTIONS
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
LEPTON-PROTON INTERACTIONS
LEPTONS
MEASURING INSTRUMENTS
MUONS
NEUTRINO-NUCLEON INTERACTIONS
NEUTRINO-PROTON INTERACTIONS
NONMETALS
PARTICLE INTERACTIONS
POSTULATED PARTICLES
RADIATION DETECTORS
SCATTERING
SPECTRA
645102* - High Energy Physics- Particle Interactions & Properties-Experimental- Weak Interactions & Properties