Measurement of the axial vector mass in neutrino-Carbon interactions at K2K

Journal Article · Fri Dec 21 04:00:00 EST 2007 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2834461· OSTI ID:21043451

Espinal, X; Sanchez, F ^[1]

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1. Institut de Fisica d'Altes Energies, Universitat Autonoma de Barcelona, E-08193 Bellaterra, Barcelona (Spain)

The nucleon weak axial-vector form factor for quasielastic interactions is determined from the analysis of neutrino-Carbon interactions in the K2K detector fully active SciBar tracking calorimeter. The analysis consists on a fit to the four-momentum squared, Q{sup 2} = -q{sup 2} = (P{sub {mu}}-P{sub {nu}}){sup 2}, of the quasi elastic reaction {nu}{sub {mu}}n{yields}{mu}{sup -}p, induced by the neutrino interactions on the Carbon nuclei. The axial-vector form factor can be approximated by a dipole with the axial-vector mass as a free parameter, with a best fit for M{sub A} = 1.144{+-}0.077(fit){sub -0.072}{sup +0.078}(syst)

• OSTI ID: 21043451
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 967; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CARBON
CARBON 12 TARGET
DIPOLES
ELECTRON-NUCLEON INTERACTIONS
FORM FACTORS
MUON NEUTRINOS
MUONS MINUS
NEUTRINO OSCILLATION
NEUTRINO REACTIONS
NUCLEONS
REST MASS
SHOWER COUNTERS
TRANSFER REACTIONS