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Use of neutrino scattering events with low hadronic recoil to inform neutrino flux and detector energy scale
Journal of Instrumentation ( IF 1.3 ) Pub Date : 2021-08-31 , DOI: 10.1088/1748-0221/16/08/p08068
A. Bashyal 1 , D. Rimal 2 , B. Messerly 3 , Z. AhmadDar 4, 5 , F. Akbar 5 , M.V. Ascencio 6 , A. Bercellie 7 , M. Betancourt 8 , A. Bodek 7 , J.L. Bonilla 9 , A. Bravar 10 , H. Budd 7 , G. Caceres 11 , T. Cai 7 , M.F. Carneiro 1, 11 , H. daMotta 11 , S.A. Dytman 3 , G.A. Daz 7 , J. Felix 9 , L. Fields 8, 12 , A. Filkins 4 , R. Fine 7 , A.M. Gago 6 , H. Gallagher 13 , A. Ghosh 11, 14 , S.M. Gilligan 1 , R. Gran 15 , D.A. Harris 8, 16 , S. Henry 7 , S. Jena 17 , D. Jena 8 , J. Kleykamp 7 , M. Kordosky 4 , D. Last 18 , A. Lozano 11 , X.-G. Lu 19 , E. Maher 13 , S. Manly 7 , W.A. Mann 13 , C. Mauger 18 , K.S. McFarland 7 , J. Miller 14 , J.G. Morfn 8 , D. Naples 3 , J.K. Nelson 4 , C. Nguyen 2 , A. Olivier 7 , V. Paolone 3 , G.N. Perdue 7, 8 , M.A. Ramrez 9, 18 , H. Ray 2 , D. Ruterbories 7 , H. Schellman 1 , C.J. SolanoSalinas 20 , H. Su 3 , M. Sultana 7 , V.S. Syrotenko 13 , E. Valencia 4, 9 , N.H. Vaughan 1 , A.V. Waldron 21 , C. Wret 7 , B. Yaeggy 14 , K. Yang 19 , L. Zazueta 4
Affiliation  

Charged-current neutrino interactions with low hadronic recoil (“low-ν”) have a cross-section that is approximately constant versus neutrino energy. These interactions have been used to measure the shape of neutrino fluxes as a function of neutrino energy at accelerator-based neutrino experiments such as CCFR, NuTeV, MINOS and MINERνA. In this paper, we demonstrate that low-ν events can be used to measure parameters of neutrino flux and detector models and that utilization of event distributions over the upstream detector face can discriminate among parameters that affect the neutrino flux model. From fitting a large sample of low-ν events obtained by exposing MINERνA to the NuMI medium-energy beam, we find that the best-fit flux parameters are within their a priori uncertainties, but the energy scale of muons reconstructed in the MINOS detector is shifted by 3.6% (or 1.8 times the a priori uncertainty on that parameter). These fit results are now used in all MINERνA cross-section measurements, and this technique can be applied by other experiments operating at MINERνA energies, such as DUNE.



中文翻译:

使用具有低强子反冲的中微子散射事件来通知中微子通量和探测器能量标度

具有低强子反冲(“low-ν”)的带电电流中微子相互作用的横截面与中微子能量近似恒定。在基于加速器的中微子实验(如 CCFR、NuTeV、MINOS 和 MINERνA)中,这些相互作用已被用于测量作为中微子能量函数的中微子通量的形状。在本文中,我们证明了低 ν 事件可用于测量中微子通量和探测器模型的参数,并且利用上游探测器面上的事件分布可以区分影响中微子通量模型的参数。通过将 MINERνA 暴露于 NuMI 中能光束而获得的大量低 ν 事件样本拟合,我们发现最适合的通量参数在其先验范围内不确定性,但在 MINOS 检测器中重建的 μ 子的能量标度偏移了 3.6%(或该参数的先验不确定性的1.8 倍)。这些拟合结果现在用于所有 MINERνA 横截面测量,并且该技术可以应用于其他在 MINERνA 能量下运行的实验,例如 DUNE。

更新日期:2021-08-31
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