标题： 通过MicroBooNE中的中微子中性流相互作用探索核子自旋结构 显示英文标题

标题： Exploring nucleon spin structure through neutrino neutral-current interactions in MicroBooNE

摘要： 奇异夸克自旋对质子自旋的净贡献，$\Delta s$，可以通过低动量转移下中性流弹性中微子-质子相互作用与电子-质子散射数据相结合来确定。 中微子-质子相互作用的概率部分取决于轴向形式因子，该形式因子表示质子的自旋结构，并可以分离为各个夸克味的贡献。 低动量转移的中微子中性流相互作用可以在MicroBooNE中测量，MicroBooNE是费米国家加速器实验室 Booster 中微子束线运行第一年的高分辨率液氩时间投影室（LArTPC）。 在MicroBooNE中，这些相互作用的信号是一条短质子轨迹。 我们介绍了在LArTPCs中质子轨迹的自动重建和分类工作，这是确定中微子-核子截面和测量$\Delta s$的重要一步。 显示英文摘要

摘要： The net contribution of the strange quark spins to the proton spin, $\Delta s$, can be determined from neutral current elastic neutrino-proton interactions at low momentum transfer combined with data from electron-proton scattering. The probability of neutrino-proton interactions depends in part on the axial form factor, which represents the spin structure of the proton and can be separated into its quark flavor contributions. Low momentum transfer neutrino neutral current interactions can be measured in MicroBooNE, a high-resolution liquid argon time projection chamber (LArTPC) in its first year of running in the Booster Neutrino Beamline at Fermilab. The signal for these interactions in MicroBooNE is a single short proton track. We present our work on the automated reconstruction and classification of proton tracks in LArTPCs, an important step in the determination of neutrino- nucleon cross sections and the measurement of $\Delta s$.