Neutral currents in the antineutrino experiment in the 15-foot bubble chamber

Journal Article · Thu Mar 01 00:00:00 EST 1984 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:5997430

Gorichev, P A; Efremenko, V I; Kliger, G K; Kolganov, V Z; Kruchinin, S P; Kubantsev, M A; Makhlyueva, I V; Fedotov, A V; Shevchenko, V G; Shekelyan, V I

We present the results of a study of the weak hadronic neutral current, using data (approx.13,000 events) obtained in the exposure of the FNAL 15-foot bubble chamber filled with a heavy neon-hydrogen mixture to a broad-band high-energy antineutrino beam. The following quantities have been measured: 1) the ratio of the neutral and charged current cross sections for nu-barN interactions sigma(nu-barN..-->..nu-barX)/sigma(nu-barN..--> mu../sup +/X) = 0.406 +- 0.028; 2) the ratio of the cross sections for neutral current nu-barn and nu-barp interactions sigma(nu-barn..-->..nu-barX/sup 0/)/sigma(nu-barp..-->..nu-barX/sup +/) = 0. 88 +- 0.17; 3) the ratio of the yields of positive and negative mesons in the current-fragmentation region for z>0.2 sigma(nu-barN..-->..nu-barh/sup +/X)/sigma(nu-barN..-->..nu-barh/sup -/ iX) = 1.02 +- 0.12. The limits on the chiral coupling constants that follow from these measurements are found. Use of the left-handed couplings obtained in neutrino experiments has permitted us to determine the values of the squares of the right-handed couplings: u/sup 2//sub R/ = 0.033 +- 0.017 and d/sup 2//sub R/ = 0.002 +- 0.017. The results are in good agreement with the predictions of the standard model of electroweak interactions.

• Research Organization: Institute of Theoretical and Experimental Physics, State Commission on the Use of Atomic Energy
• OSTI ID: 5997430
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Vol. 39:3
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTINEUTRINO-NEUTRON INTERACTIONS
CHARGED-CURRENT INTERACTIONS
NEUTRAL-CURRENT INTERACTIONS
ANTINEUTRINO-PROTON INTERACTIONS
COUPLING CONSTANTS
CROSS SECTIONS
ENERGY SPECTRA
EXPERIMENTAL DATA
NEON
ANTILEPTON-NEUTRON INTERACTIONS
ANTILEPTON-PROTON INTERACTIONS
ANTINEUTRINO-NUCLEON INTERACTIONS
DATA
ELEMENTS
FLUIDS
GASES
INFORMATION
INTERACTIONS
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
LEPTON-PROTON INTERACTIONS
NEUTRINO-NEUTRON INTERACTIONS
NEUTRINO-NUCLEON INTERACTIONS
NEUTRINO-PROTON INTERACTIONS
NONMETALS
NUMERICAL DATA
PARTICLE INTERACTIONS
RARE GASES
SPECTRA
645102* - High Energy Physics- Particle Interactions & Properties-Experimental- Weak Interactions & Properties