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

被引：91

作者：

Bhattacharya, Bhubanjyoti ^{[1
]}

Hill, Richard J.

Paz, Gil

机构：

[1] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA

来源：

PHYSICAL REVIEW D | 2011年 / 84卷 / 07期

基金：

美国国家科学基金会;

关键词：

VECTOR FORM-FACTOR; PION ELECTROPRODUCTION; CROSS-SECTIONS; THRESHOLD PI;

D O I：

10.1103/PhysRevD.84.073006

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 C-12 are analyzed under the assumption of a definite nuclear model. The value of the axial mass parameter, m(A) = (+0.22)(-0.07) +/- 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.

引用

页数：10

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