Search for SM and BSM signature of 3 Higgs bosons at s = 13 TeV at the ATLAS experiment

在 ATLAS 实验中搜索 s = 13 TeV 的 3 个希格斯玻色子的 SM 和 BSM 特征

• 批准号: 2582813
• 金额: --
• 依托单位: University of Oxford
• 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-2582813
• 关键词: Search; SM; BSM; signature; Higgs

The student will perform a Qualification Task on flavour tagging triggers which will attempt to reduce the gluon->b b background process that is the largest contaminant of any Higgs boson search with the Higgs assumed to decay to b-quarks. The hope is to have this trigger, and an offline "gluon veto" in place before Run 3 starts. This will be the highest priority for the first year of her D.Phil. and will be an extremely important component of her subsequent research work. The student will research Exotic Higgs production in the multi-Higgs sector using data from Run 2 and simulations within the ATLAS experiment. Multi-Higgs signatures will all feature the decay of the Higgs boson to b quarks although this may not end up being the only decay signature studied or used by the student. The student may also perform phenomenology studies outside the ATLAS framework into multi-higgs signatures for future upgrades of the LHC and future colliders depending on the exact schedule details and data collection during her research time. If research time allows, A variety of channels will be explored with emphasis on 3-Higgs final states where at least two of the three Higgs particles decay into b-quarks. The uncertain nature of the LHC data-taking during this student's graduate career requires that we maintain some flexibility on her programme so that she may submit on-time.

学生将对风味标记触发器执行一项资格任务，该任务将试图减少Gluon-> B B背景过程，该过程是任何Higgs Boson搜索中最大的污染物，而Higgs假定会腐烂到B-Quarks。希望在运行3开始前有这个触发器，并在运行3开始之前进行离线“ Gluon否决权”。这将是她D.Phil第一年的最高优先事项。并将成为她随后的研究工作的一个非常重要的组成部分。学生将使用ATLAS实验中的数据和模拟中的数据和模拟研究在多基格斯行业中研究异国情调的希格斯。 Multi-Higgs签名都将以Higgs Boson的衰减为B Quarks，尽管这可能最终不是学生研究或使用的唯一衰减签名。该学生还可以在ATLAS框架之外进行现象学研究，以根据LHC的未来升级和未来的颜色colling子进行多higgs签名，这取决于她在研究期间的确切时间表细节和数据收集。如果研究时间允许，将探索各种通道，重点是3-higgs最终状态，其中三个希格斯颗粒中至少有两个腐烂到b Quarks。在该学生研究生生涯中，LHC数据摄取的不确定性质要求我们对她的计划保持一定的灵活性，以便她可以按时提交。