在2至20 GeV的类弹性νμ-碳氢化合物相互作用中同时测量质子和轻子运动学

Simultaneous Measurement of Proton and Lepton Kinematics in Quasielasticlike ν_{μ}-Hydrocarbon Interactions from 2 to 20 GeV.

作者信息

Ruterbories D, Akhter S, Ahmad Dar Z, Akbar F, Ansari V, Ascencio M V, Sajjad Athar M, Bashyal A, Bercellie A, Betancourt M, Bodek A, Bonilla J L, Bravar A, Budd H, Caceres G, Cai T, Carneiro M F, Díaz G A, da Motta H, Felix J, Fields L, Filkins A, Fine R, Gago A M, Gallagher H, Gaur P K, Ghosh A, Gilligan S M, Gran R, Haase E, Harris D A, Henry S, Jacobsen K, Jena D, Jena S, Kleykamp J, Klustová A, Kordosky M, Last D, Lozano A, Lu X-G, Maher E, Manly S, Mann W A, Mauger C, McFarland K S, McGowan A M, Messerly B, Miller J, Moreno O, Morfín J G, Naples D, Nelson J K, Nguyen C, Olivier A, Paolone V, Perdue G N, Plows K-J, Ramírez M A, Ransome R D, Ray H, Schellman H, Solano Salinas C J, Su H, Sultana M, Syrotenko V S, Valencia E, Vaughan N H, Waldron A V, Wascko M O, Wret C, Yaeggy B, Zazueta L

机构信息

Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627, USA.

AMU Campus, Aligarh, Uttar Pradesh 202001, India.

出版信息

Phys Rev Lett. 2022 Jul 8;129(2):021803. doi: 10.1103/PhysRevLett.129.021803.

DOI:10.1103/PhysRevLett.129.021803

PMID:35867435

Abstract

Neutrino charged-current quasielastic-like scattering, a reaction category extensively used in neutrino oscillation measurements, probes nuclear effects that govern neutrino-nucleus interactions. This Letter reports the first measurement of the triple-differential cross section for ν_{μ} quasielastic-like reactions using the hydrocarbon medium of the MINERvA detector exposed to a wideband beam spanning 2≤E_{ν}≤20 GeV. The measurement maps the correlations among transverse and longitudinal muon momenta and summed proton kinetic energies, and compares them to predictions from a state-of-art simulation. Discrepancies are observed that likely reflect shortfalls with modeling of pion and nucleon intranuclear scattering and/or spectator nucleon ejection from struck nuclei. The separate determination of leptonic and hadronic variables can inform experimental approaches to neutrino-energy estimation.

摘要

中微子带电流类弹性散射是一种广泛应用于中微子振荡测量的反应类型，它能探测支配中微子与原子核相互作用的核效应。本信函报道了首次利用MINERvA探测器的碳氢化合物介质，对能量范围为2≤Eν≤20 GeV的宽带束流中νμ类弹性反应的三微分截面进行测量。该测量描绘了横向和纵向μ子动量与质子总动能之间的关联，并将其与最新模拟预测结果进行比较。观测到的差异可能反映了π介子和核子核内散射建模以及/或被撞击原子核中旁观核子射出的不足。轻子变量和强子变量的单独测定可为中微子能量估计的实验方法提供参考。