Measurement of neutrino-nucleon neutral current elastic scattering at SciBooNE

作者：Takei Hideyuki^*

来源：Physica E: Low-Dimensional Systems and Nanostructures , 2011, 43(3): 830-834.

DOI：10.1016/j.physe.2010.07.062

The cross-section for neutrino-nucleon neutral current (NC) elastic scattering contains the axial vector form factor G(1)(Q(2)) as well as the electromagnetic form factors. Strange part of G(1) is proportional to strange part of nucleon spin (Delta s) in the Q(2) -> 0 limit. Measurement of the NC elastic cross-section in the small Q(2) region enables us to access Delta s. Experimentally, the signal of NC elastic scattering is a single proton. Analysis for the single proton events using geometrical and energy deposit information on reconstructed track was performed by SciBooNE experiment. SciBooNE is an experiment for the measurement of neutrino-nucleon scattering cross-sections using neutrino beam with energy peak at 0.7 GeV at Fermi National Accelerator Laboratory. NC elastic scattering data sample including vp -> vp and vn -> vn is obtained. The absolute cross-section as a function of nucleon kinetic energy is reported.