Low-energy physics in neutrino LArTPCs
Low-energy physics in neutrino LArTPCs
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DOI：
10.1088/1361-6471/acad17
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发表时间：
2023-01
期刊：
影响因子：
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通讯作者：
S. Andringa;J. Asaadi;J. T. C. Bezerra;F. Capozzi;D. Caratelli;F. Cavanna;E. Church;Y. Efremenko-Y.
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文献类型：
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作者：
S. Andringa;J. Asaadi;J. T. C. Bezerra;F. Capozzi;D. Caratelli;F. Cavanna;E. Church;Y. Efremenko-Y.
在本文中，我们回顾了科学的机遇和挑战有关的检测和重建的低能量（小于100兆电子伏）的签名在液氩时间投影室（LArTPC）中微子探测器。LArTPC中微子探测器设计用于使用GeV级加速器中微子束进行精确的长基线振荡测量，通过检测几十MeV范围内的事件特征，对一系列物理和天体物理特征也具有独特的灵敏度。此外，低能特征信号是GeV尺度加速器中微子相互作用末态的一个组成部分，它们的重建可以提高LArTPC实验的振荡物理灵敏度。来自加速器和自然源的新物理信号也会在低能量范围内产生不同的特征，这些特征的重建可以增加基于LArTPC的搜索中可访问的超越标准模型场景的广度。要实现这一系列潜在的好处，仍然存在各种实验和理论方面的挑战。中微子相互作用截面和其他核物理过程在氩相关的子百兆电子伏LArTPC签名知之甚少，和改进的理论和实验测量是必要的; π介子衰变静止源和带电粒子和中子试验束是理想的设施，以提高这种理解。在低能量范围内有具体的校准需要，以及控制和了解放射性和宇宙成因背景的具体需要。低能量特征，无论是稳态还是超新星爆发或更大GeV级事件拓扑的一部分，都具有特定的触发，DAQ和重建要求，必须在传统GeV级数据收集和分析途径的范围之外解决。还应探索未来LArTPC技术的新概念，以增强低能耗能力，以帮助应对这些挑战。
In this paper, we review scientific opportunities and challenges related to detection and reconstruction of low-energy (less than 100 MeV) signatures in liquid argon time-projection chamber (LArTPC) neutrino detectors. LArTPC neutrino detectors designed for performing precise long-baseline oscillation measurements with GeV-scale accelerator neutrino beams also have unique sensitivity to a range of physics and astrophysics signatures via detection of event features at and below the few tens of MeV range. In addition, low-energy signatures are an integral part of GeV-scale accelerator neutrino interaction final-states, and their reconstruction can enhance the oscillation physics sensitivities of LArTPC experiments. New physics signals from accelerator and natural sources also generate diverse signatures in the low-energy range, and reconstruction of these signatures can increase the breadth of Beyond the Standard Model scenarios accessible in LArTPC-based searches. A variety of experimental and theory-related challenges remain to realizing this full range of potential benefits. Neutrino interaction cross-sections and other nuclear physics processes in argon relevant to sub-hundred-MeV LArTPC signatures are poorly understood, and improved theory and experimental measurements are needed; pion decay-at-rest sources and charged particle and neutron test beams are ideal facilities for improving this understanding. There are specific calibration needs in the low-energy range, as well as specific needs for control and understanding of radiological and cosmogenic backgrounds. Low-energy signatures, whether steady-state or part of a supernova burst or larger GeV-scale event topology, have specific triggering, DAQ and reconstruction requirements that must be addressed outside the scope of conventional GeV-scale data collection and analysis pathways. Novel concepts for future LArTPC technology that enhance low-energy capabilities should also be explored to help address these challenges.