Sterile neutrino search at the Fermilab Short Baseline Neutrino Program

费米实验室短基线中微子计划的惰性中微子搜索

• 批准号: 2601525
• 金额: --
• 依托单位: University of Liverpool
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2601525
• 关键词: Sterile; neutrino; search; Fermilab; Short

The Short-Baseline Near Detector (SBND) will be one of three liquid Argon Time Projection Chamber (LArTPC) neutrino detectors positioned along the axis of the Booster Neutrino Beam (BNB) at Fermilab, as part of the Short-Baseline Neutrino (SBN) Program. The detector is currently in the construction phase and is anticipated to begin operation in the second half of 2022. SBND is characterised by superb imaging capabilities and will record over a million neutrino interactions per year. Thanks to its unique combination of measurement resolution and statistics, SBND will carry out a rich program of neutrino interaction measurements and novel searches for physics beyond the Standard Model (BSM). It will enable the potential of the overall SBN sterile neutrino program by performing a precise characterisation of the unoscillated event rate, and by constraining BNB flux and neutrino-Argon cross-section systematic uncertainties. The goal of this project is to perform, within the VALOR analysis framework, a joint analysis of several key exclusive final state samples recorded on SBND. The purpose of this effort is to i) improve the phenomenology of neutrino interactions in the GENIE simulation used by SBN, ii) produce stringent SBND-driven constraints of flux and cross-section systematic uncertainties, and iii) improve the estimates of the unoscillated event rates at ICARUS, the far detector of the SBN program. The aim of this project is to enable the oscillation sensitivity of the full SBN program that, for the definitive 5a exclusion the hypothesis of light sterile neutrinos with the parameters suggested by the LSND/MiniBooNE anomaly, rests upon the ability to constrain at 1% level all the systematics that are uncorrelated between SBND and ICARUS. A parallel objective of this project is to contribute to the development of exclusive final state selections on SBND, with particular emphasis on single-pion production.

探测器附近的短基线（SBND）将是沿Fermilab的增强中微子束（BNB）沿轴的轴沿轴的轴轴心（SBN）的一部分，沿Fermilab的增强中微子束（BNB）轴心定位的三个液体氩时间投影室（LARTPC）中微子探测器之一程序。该探测器目前处于施工阶段，预计将在2022年下半年开始运行。SBND的特征是出色的成像能力，每年将记录超过100万个中微子相互作用。由于其独特的测量解决方案和统计数据的独特组合，SBND将执行丰富的中微子相互作用测量和新颖搜索标准模型（BSM）的新颖搜索。它将通过确切的透明事件速率进行精确表征，并限制BNB通量和中微子 - 阿贡横截面系统不确定性，从而实现总体SBN无菌中微子计划的潜力。该项目的目标是在Valor分析框架内执行对SBND记录的几个关键独家最终样本的联合分析。这项工作的目的是i）改善SBN使用的精灵模拟中中微子相互作用的现象学，ii）产生严格的SBND驱动的通量和横截面系统不确定性的约束； SBN计划的远探测器Icarus的费率。该项目的目的是启用完整SBN程序的振荡灵敏度，该程序为确定的5A排除了光无菌中微子的假设，其参数是LSND/Miniboone Anomaly提出的参数，这取决于约束以1％％的限制的能力SBND和ICARUS之间不相关的所有系统学。该项目的一个平行目标是为SBND上的独家最终国家选择的发展做出贡献，并特别强调了单杆型生产。