Measurement of the muon antineutrino charged-current interactions without pions in the final state in the NOvA near detector

Nova是一项位于美国的实验，旨在测量中微子和反中微子的振荡，以更好地了解宇宙的起源。为了测量中微子振荡，我们需要学习和理解中微子和反中微子是如何相互作用的。目前，反中微子相互作用截面的约束很差，反中微子中的介子交换电流等过程还没有被很好地理解。该项目是在新星近探测器中开发一种测量末态没有介子的Muon反中微子相互作用的方法。该样品以准弹性和介子交换电流过程为主。学生将开发这个样本的选择，提取作为出射粒子运动学函数的横截面，并将它们与当前可用的理论模型进行比较。这项新的测量有机会为中微子界提供重要的数据，并有助于理清过去中微子振荡测量中的影响。

NOvA is an experiment based in the US that aims to measure neutrino and antineutrino oscillations to better understand the origin of the universe. To measure neutrino oscillations, we need to learn and understand how neutrinos and antineutrinos interact. Antineutrino interaction cross sections are currently poorly constrained, and processes like Meson Exchange Currents in antineutrinos are not well understood. The project is to develop a measurement of the muon antineutrino interactions without pions in the final state in the NOvA near detector. This sample is dominated by quasi elastic and meson exchange current processes. The student will develop the selection for this sample, extract the cross sections as a function of the kinematics of the outgoing particles, and compare them to currently available theoretical models. This new measurement has the opportunity to provide vital data to the neutrino community, and help disentangle effects in past neutrino oscillation measurements.