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

NOvA是一个位于美国的实验，旨在测量中微子和反中微子振荡，以更好地了解宇宙的起源。为了测量中微子振荡，我们需要了解和理解中微子和反中微子如何相互作用。反中微子相互作用截面目前受到的约束很差，反中微子中的介子交换电流等过程也没有得到很好的理解。该项目的目的是在NOvA近探测器中测量末态没有π介子的μ介子反中微子相互作用。这个样品是占主导地位的准弹性和介子交换电流过程。学生将开发此样本的选择，提取作为传出粒子运动学函数的横截面，并将其与当前可用的理论模型进行比较。这种新的测量有机会为中微子社区提供重要的数据，并帮助解开过去中微子振荡测量的影响。

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.