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arXiv 1901.04071hep-exphysics.ins-det
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MicroBooNE中中性电流弹性散射和奇异轴向形状因子的研究

Studying Neutral Current Elastic Scattering and the Strange Axial Form Factor in MicroBooNE

Katherine Woodruff

摘要:

奇异轴向形状因子是对中性流弹性中微子-质子截面影响最小的约束因子之一,它代表了奇异夸克自旋对质子自旋结构的贡献。当负四动量转移平方($Q^2$)为零时,这就变成了净奇异自旋贡献$Δs$。奇异轴向形状因子可以通过研究MicroBooNE探测器中的NC弹性散射事件来确定。MicroBooNE的独特能力,以检测低能量质子,预计将允许重建这些事件的$Q^2$低至0.10 GeV的$^2$,并确定奇怪的轴向形状因子在一个模型独立的方法。我们提出了一个选择的中性流弹性事件的一个子集的MicroBooNE中微子数据,以及我们的计划,以提取奇怪的轴向形状因子和$Δs$的一部分,从这个选择在完整的数据集。

英文摘要:

One of the least constrained contributions to the neutral current (NC) elastic neutrino-proton cross section is the strange axial form factor, which represents the strange quark spin contribution to the spin structure of the proton. This becomes the net strange spin contribution, $Δs$, in the limit when the negative four-momentum transfer squared ($Q^2$) is zero. The strange axial form factor can be determined by studying NC elastic scattering events in the MicroBooNE detector. MicroBooNE's unique ability to detect low-energy protons is expected to allow the reconstruction of these events with a $Q^2$ as low as 0.10 GeV$^2$ and to determine the strange axial form factor in a model-independent approach. We present a selection of neutral current elastic events in a subset of MicroBooNE neutrino data, as well as our plan to extract the strange part of the axial form factor and $Δs$ from this selection in the full data set.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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