Role of Final State Interactions in Determining CP Violation in the Neutrino Sector

下一代中微子实验，如超神冈实验，需要将中微子相互作用截面的不确定度降低到几个百分点的水平，才能对中微子部门的CP破坏的大小施加竞争限制。减少这些不确定性的一个主要挑战是，“终态相互作用”，即出射的核子和离开原子核的介子之间的相互作用，可以掩盖我们对初级中微子相互作用顶点的看法。在这个项目中，Tom将探索如何使用来自厚靶实验的pion和核子散射数据来对终态相互作用施加新的约束，然后探索这些新的约束如何改进东海到神冈实验和未来的Hyper-Kamiokande实验的中微子振荡分析。

Next generation neutrino experiments such as Hyper-Kamiokande require neutrino interaction cross-section uncertainties to be reduced to the few-percent level if a competitive constraint is to be placed on the magnitude of CP violation in the neutrino sector. One major challenge in reducing these uncertainties is that 'final state interactions', interactions between outgoing nucleons and pions as they leave nuclei, can shield our view of the primary neutrino interaction vertex. In this project Tom will explore how new constraints could be placed on final state interactions using pion and nucleon scattering data from thick target experiments, before exploring how these new constraints could improve neutrino oscillation analyses on the Tokai-to-Kamiokande experiment and future Hyper-Kamiokande experiment.