Model-independent determination of the axial mass parameter in quasielastic neutrino-nucleon scattering

Journal Article · Sat Oct 01 04:00:00 EDT 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.84.073006· OSTI ID:21607752

Bhattacharya, Bhubanjyoti; Hill, Richard J; Paz, Gil ^[1]

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1. Enrico Fermi Institute and Department of Physics, University of Chicago, Chicago, Illinois, 60637 (United States)

Quasielastic neutrino-nucleon scattering is a basic signal process for neutrino oscillation studies. At accelerator energies, the corresponding cross section is subject to significant uncertainty due to the poorly constrained axial-vector form factor of the nucleon. A model-independent description of the axial-vector form factor is presented. Data from the MiniBooNE experiment for quasielastic neutrino scattering on {sup 12}C are analyzed under the assumption of a definite nuclear model. The value of the axial mass parameter, m{sub A}=0.85{sub -0.07}{sup +0.22}{+-}0.09 GeV, is found to differ significantly from extractions based on traditional form factor models. Implications for future neutrino scattering and pion electroproduction measurements are discussed.

• OSTI ID: 21607752
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 7 Vol. 84; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
BASIC INTERACTIONS
BOSONS
CROSS SECTIONS
DIMENSIONLESS NUMBERS
DIRECT REACTIONS
ELECTROMAGNETIC INTERACTIONS
ELECTROPRODUCTION
ELEMENTARY PARTICLES
ENERGY RANGE
EXTRACTION
FERMIONS
FORM FACTORS
GEV RANGE
HADRONS
INTERACTIONS
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
LEPTONS
MASS
MASSLESS PARTICLES
MATHEMATICAL MODELS
MESONS
NEUTRINO OSCILLATION
NEUTRINO-NUCLEON INTERACTIONS
NEUTRINOS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEONS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PIONS
PSEUDOSCALAR MESONS
QUASI-ELASTIC SCATTERING
QUASI-FREE REACTIONS
SCATTERING
SEPARATION PROCESSES
SIMULATION