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4-11 July 2012
Melbourne Convention and Exhibition Centre
Australia/Melbourne timezone
ICHEP2012 - 36th International Conference for High Energy Physics

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

5 Jul 2012, 14:15
15m
Room 217 (Melbourne Convention and Exhibition Centre)

Room 217

Melbourne Convention and Exhibition Centre

Melbourne Australia
Parallel Sessions Track 8. Neutrinos TR 8 - Neutrinos RM 219

Speaker

Prof. Richard Hill (University of Chicago (US))

Description

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 carbon are analyzed under the assumption of a definite nuclear model. The value of the axial mass parameter, m_A=0.85^{+0.22}_{-0.07} +/- 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.

Primary author

Prof. Richard Hill (University of Chicago (US))

Co-authors

Dr Bhubanjyoti Bhattacharya (University of Montreal) Prof. Gil Paz (Wayne State University)

Presentation materials