Quasielastic neutrino scattering: A measurement of the weak nucleon axial-vector form factor

Journal Article · Mon Jun 01 04:00:00 EDT 1981 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.23.2499· OSTI ID:6442071

Baker, N J; Cnops, A M; Connolly, P L; Kahn, S A; Kirk, H G; Murtagh, M J; Palmer, R B; Samios, N P; Tanaka, M

The quasielastic reaction ..nu../sub ..mu../n..--> mu../sup -/p was studied in an experiment using the BNL 7-foot deuterium bubble chamber exposed to the wide-band neutrino beam with an average energy of 1.6 GeV. A total of 1138 quasielastic events in the momentum-transfer range Q/sup 2/ = 0.06 --3.00 (GeV/c)/sup 2/ were selected by kinematic fitting and particle identification and were used to extract the axial-vector form factor F/sub A/(Q/sup 2/) from the Q/sup 2/ distribution. In the framework of the conventional V-A theory, we find that the dipole parametrization is favored over the monopole. The value of the axial-vector mass M/sub A/ in the dipole parametrization is 1.07 +- 0.06 GeV, which is in good agreement with both recent neutrino and electroproduction experiments. In addition, the standard assumptions of conserved vector current and no second-class currents are checked.

• Research Organization: Brookhaven National Laboratory, Upton, New York 11973
• OSTI ID: 6442071
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 23:11; ISSN PRVDA
• 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
ALGEBRAIC CURRENTS
AXIAL-VECTOR CURRENTS
BARYONS
BUBBLE CHAMBERS
CURRENTS
CVC THEORY
DEUTERIUM
DIRECT REACTIONS
ELEMENTARY PARTICLES
FERMIONS
FORM FACTORS
GAS TRACK DETECTORS
HADRONS
HYDROGEN ISOTOPES
INTERACTIONS
ISOTOPES
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
LEPTONS
LIGHT NUCLEI
MEASURING INSTRUMENTS
MUONS
MUONS MINUS
NEUTRINO-NEUTRON INTERACTIONS
NEUTRINO-NUCLEON INTERACTIONS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
ODD-ODD NUCLEI
PARTICLE IDENTIFICATION
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
PROTONS
QUASI-ELASTIC SCATTERING
QUASI-FREE REACTIONS
RADIATION DETECTORS
SCATTERING
SECOND-CLASS CURRENTS
STABLE ISOTOPES
V-A THEORY