利用核子-轻子关联改进的T2K近探测器对末态无介子中微子和反中微子相互作用的灵敏度
Sensitivity of the Upgraded T2K Near Detector to constrain neutrino and anti-neutrino interactions with no mesons in the final state by exploiting nucleon-lepton correlations
摘要：
未来基于加速器的中微子振荡测量必须克服的最具挑战性和影响力的不确定性来自于我们有限的能力来模拟几个GeV的中微子-核相互作用。特别是，它是至关重要的，以更好地了解核效应，可以改变中微子相互作用的最终状态拓扑结构和运动学，诱导中微子能量重建可能的偏见。升级后的ND 280近探测器将直接面对中微子相互作用的不确定性，使用一套新的探测器，具有全极角接受能力，提高了空间分辨率，中子探测能力和降低了跟踪阈值。在这篇手稿中，我们探讨了升级后的探测器可以预期的物理灵敏度，特别关注对核效应的额外灵敏度，以及它们如何受到使用传出轻子和核子运动学构建的运动学变量的未来测量的约束。
英文摘要：
The most challenging and impactful uncertainties that future accelerator-based measurements of neutrino oscillations must overcome stem from our limited ability to model few-GeV neutrino-nucleus interactions. In particular, it is crucial to better understand the nuclear effects which can alter the final state topology and kinematics of neutrino interactions, inducing possible biases in neutrino energy reconstruction. The upgraded ND280 near detector of the T2K experiment will directly confront neutrino interaction uncertainties using a new suite of detectors with full polar angle acceptance, improved spatial resolutions, neutron detection capabilities and reduced tracking thresholds. In this manuscript we explore the physics sensitivity that can be expected from the upgraded detector, specifically focusing on the additional sensitivity to nuclear effects and how they can be constrained with future measurements of kinematic variables constructed using both outgoing lepton and nucleon kinematics.
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