Higgs Physics with the ATLAS detector at the LHC

该博士项目将利用欧洲核子研究中心ATLAS探测器在Run-2（2015-2018）和即将到来的Run-3（2015-2018）期间收集的数据，对2012年在大型强子对撞机（LHC）上发现的希格斯粒子的性质进行表征（2022-2024）。预计该方案将侧重于测量当希格斯粒子衰变为一对b夸克时与一对顶夸克（“ttH”）相关的希格斯粒子的产生，特别是测量信号强度和微分截面，从而改进对顶夸克汤川耦合的测量。有了额外的Run-3数据，LHC将继续提高其对希格斯玻色子自耦合的灵敏度。测量单希格斯和双希格斯产生通道可以进一步限制希格斯玻色子的自耦合。预计博士项目将扩展到覆盖通道中的di-Higgs生产，其中一个Higgs粒子衰变为一对b夸克，另一个衰变为一对Z玻色子（进一步衰变为独特的签名，如bbll，bbvv和llvv）。

The PhD programme will be on the characterisation of properties of the Higgs particle discovered at the Large Hadron Collider (LHC) in 2012, using data collected with the ATLAS detector at CERN during Run-2 (2015-2018) and the forthcoming Run-3 (2022-2024). The programme is expected to focus on the measurement of Higgs particle production in association with a pair of top quarks ("ttH") when the Higgs decays to a pair of b-quarks, specifically on the measurement of the signal strength and of differential cross-sections, leading to improved measurements of the top-quark Yukawa coupling. With the additional Run-3 data, the LHC will continue to increase its sensitivity to the self-coupling of the Higgs boson. Measurement of single-Higgs and di-Higgs production channels allows further constraining the self-coupling of the Higgs boson. It is expected the PhD project will extend to cover di-Higgs production in channels in which one Higgs particle decays to a pair of b-quarks and the other decays to a pair of Z bosons (further decaying to distinctive signatures such as bbll, bbvv and llvv).