Heavy flavour physics at LHCb and development of vertexing with fast timing

这项研究是在欧洲核子研究中心的LHCb实验的背景下进行的，这是一个致力于测量质子-质子相互作用前沿区域的探测器。最值得注意的是，LHCb特别适合研究浓郁的味道：那些含有美丽和魅力夸克的味道。LHCb已经针对LHC运行的第三次运行进行了升级，它将导致数据集大小在未来三年内增加两倍。学生资格的数据分析部分将使用这些年收集的新数据。具体地说，研究主题将是研究最重轻子和最重夸克之间的耦合。LHCb的巨大数据集使得涉及这些耦合的衰变可以得到前所未有的详细研究。在第一轮和第二轮中开发的技术将根据调查要求进行应用和扩展。学员将包含重要的硬件方面。LHCb实验的升级II(2033+)在很大程度上取决于未来顶点探测器中4D顶点的出现。一场密集的测试束运动正在进行中，以展示为快速定时跟踪应用程序构建的技术，并应最终以与4D顶点相当的精度测量轨道时间戳。这名学生将加入这项测试光束的工作，并描述由英国硅工业合作伙伴开发的快速传感器的特征。作为贡献，学生将承担一些TESTBEAM软件的维护责任。

The research studentship is set in the context of the LHCb experiment at CERN, which is a detector dedicated to the measurements of the forward region of proton-proton interactions. Most notably, LHCb is exceptionally apt for the study of heavy-flavour: those containing beauty and charm quarks. LHCb has been upgraded for Run 3 of LHC running, and it will cause a trebling of the dataset size in the next three years. The data analysis part of the studentship will use the new data collected during those years. Specifically, the research topic will be an examination of the the coupling between the heaviest lepton and heaviest quarks. The huge datasets of LHCb allow decays involving these couplings to be studied with unprecedented detail. Techniques developed during Run 1&2 will be employed and extended as the investigation dictates.The studentship will contain a significant hardware aspect. The Upgrade II of the LHCb experiment (2033+) is critically dependent on the advent of 4D vertexing in the future vertex detector. An intensive testbeam campaign is underway to demonstrate technologies build for fast-timing tracking applications and should culminate in measuring track time-stamping with a precision commensurate with 4D vertexing. The student will join this testbeam effort and characterise the fast sensors being developed by UK silicon industrial partners. As a contribution, the student will pick up some maintenance responsibilities for the testbeam software.