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首页> 外文会议>International Workshop on Neutrino-Nucleus Interactions in the Few GeV Region >Four Momentum Transfer Discrepancy in the Charged Current π~+ Production in the MiniBooNE: Data vs. Theory
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Four Momentum Transfer Discrepancy in the Charged Current π~+ Production in the MiniBooNE: Data vs. Theory

机译：在Miniboone的带电电流π〜+生产中的四个动量转移差异：数据与理论

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摘要

The MiniBooNE experiment has collected what is currently the world's largest sample of v_μ charged current single charged pion (CC1π~+) interactions, roughly 46,000 events. The purity of the CC1π~+ sample is 87% making this the purest event sample observed in the MiniBooNE detector [1]. The average energy of neutrinos producing CC1π~+ interactions in MiniBooNE is about 1 GeV[2], therefore the study of these events can provide insight into both resonant and coherent pion production processes. In this talk, we will discuss the long-standing discrepancy in four-momentum transfer observed between CC1π~+ data and existing predictions. Several attempts to address this problem will be presented. Specifically, the Rein-Sehgal [3,4] model has been extended to include muon mass terms for both resonant [5, 6] and coherent [7] production. Using calculations from [8], an updated form for the vector form factor [9] has also been adopted. The results of this improved description of CC1π~+ production will be compared to the high statistics MiniBooNE CC1π~+ data and several existing parametrisations of the axial vector form factor [8, 9,11].
机译：Miniboone实验收集了目前世界上最大的V_μ带电电流单电压（CC1π〜+）互动的样本，大约46,000个事件。 CC1π〜+样品的纯度为87％，使得在MINIBOONE检测器中观察到的最纯粹的事件样品[1]。 MINIBOONE中的中微子产生CC1π〜+相互作用的中微子的平均能量约为1 GEV [2]，因此对这些事件的研究可以对谐振和相干沟生产过程提供洞察。在这次谈话中，我们将讨论CC1π〜+数据与现有预测之间观察到的四次动量转移中的长期差异。将提出几次解决此问题的尝试。具体地，ReN-Sehgal [3,4]模型已经扩展到包括谐振[5,6]和相干[7]生产的MuON质量术语。使用从[8]的计算，还采用了载体形式[9]的更新形式。这种改进的CC1π〜+生产描述的结果将与高统计小核苷酸CC1π〜+数据和轴向载体形状因子的几个现有参数化进行比较[8,9,11]。

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