Study for neutrino flux uncertainty toward an experiment of CP violation in neutrino oscillation

本研究的动机是为了减少中微子束产生的系统不确定性。不确定性的一个主要来源是质子和碳相互作用中强子产生的分布。我们测量了质子与碳相互作用的介子产率分布。在此基础上，我们成功地降低了中微子束的不确定度。

Motivation of this study is to reduce systematic uncertainty in the neutrino beam production. A main source of the uncertainty is a distribution of hadron production in proton and carbon interaction. We measured pion yield distribution from interaction of proton and carbon. Based on the results, we successfully reduce the uncertainty of neutrino beam.