Heavy-flavour and jet correlation measurements with the ALICE experiment at the LHC

在大型强子对撞机上通过 ALICE 实验进行重味和喷射相关性测量

• 批准号: 2751289
• 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: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2751289
• 关键词: Heavy; flavour; jet; correlation; measurements

ALICE (A Large Ion Collider Experiment) is one of the four experiments at the LHC at CERN (Geneva, Switzerland), which focuses on measurements of ultra-relativistic heavy ion collisions. The ALICE experiment has been extensively upgraded during the Long Shutdown 2 period of the LHC in the last few years, including the complete replacement of its Silicon Inner Tracking System with the largest all-pixel Silicon detector in the world built solely using monolithic active pixel CMOS sensors. Liverpool has played a leading role in this project during the construction, installation and commissioning phase and this will continue with its operation during the physics exploitation phase about to begin.Data taking at the LHC (Run 3) will indeed restart shortly, including a heavy-ion run scheduled at the end of 2022. Coupled to the recent detector and accelerator upgrades, this offers unprecedented opportunities to perform new measurements to probe the deep structure of the quark-gluon plasma and constrain the properties of deconfined hot QCD matter.With this PhD project we intend to develop and perform first high-precision measurements which correlate the production of heavy-flavour hadrons (with charm or beauty quarks) and jets in Pb-Pb collisions at ultra-relativistic energies. These collisions are topologically extremely complicated. The project will thus also involve the development and use of machine learning techniques to cope with the challenging high-density environment of these heavy-ion collisions.

大型离子对撞机实验（ALICE）是位于瑞士日内瓦的欧洲核子研究中心（CERN）大型强子对撞机（LHC）的四个实验之一，主要用于测量超相对论重离子碰撞。ALICE实验在过去几年的LHC长周期2期间进行了广泛的升级，包括用世界上最大的全像素硅探测器完全取代其硅内部跟踪系统，该探测器仅使用单片有源像素CMOS传感器。利物浦在该项目的建设、安装和调试阶段发挥了主导作用，并将在即将开始的物理开发阶段继续运作。LHC（运行3）的数据采集将很快重新启动，包括计划于2022年底进行的重离子运行。再加上最近的探测器和加速器升级，这提供了前所未有的机会来进行新的测量，以探测夸克-胶子等离子体的深层结构和限制非限定热QCD物质的性质。通过这个博士项目，我们打算开发和执行第一个高精度的测量，这些测量与重味强子的产生相关（与魅力或美夸克）和超相对论能量的Pb-Pb碰撞中的喷流。这些碰撞在拓扑学上极其复杂。因此，该项目还将涉及开发和使用机器学习技术，以科普这些重离子碰撞的高密度环境。