AI 中文总结
利用ATLAS探测器在13、13.6 TeV质子-质子碰撞数据中，对H→ττ道的t\bar{t}H与tH产生过程进行研究，测量了信号强度并对t\bar{t}H截面做微分测量，为相关物理研究提供实验依据。
AI 中文摘要
本研究对希格斯玻色子与顶夸克对（t\bar{t}H）或单个顶夸克（tH）伴随产生的过程进行了研究，采用τ轻子对衰变道。分析依赖于顶夸克和τ轻子均为全强子衰变的末态，使用了欧洲核子中心大型强子对撞机ATLAS探测器记录的质心系能量为13 TeV和13.6 TeV的质子-质子碰撞数据样本，对应的积分亮度分别为140 fb⁻¹和161 fb⁻¹。测量得到的信号强度μ（定义为测量截面与标准模型预测值的比值），t\bar{t}H对应的μ_{t\bar{t}H}=1.51^{+0.71}_{-0.62}，tH对应的μ_{tH}=-0.4^{+5.6}_{-5.1}。此外，在简化模板截面框架下，按希格斯玻色子横动量的三个区间对t\bar{t}H的截面进行了微分测量。
英文摘要
A study of the production of the Higgs boson in association with either a top-quark pair ($t\bar{t}H$) or a single top quark ($tH$) in the $τ$-lepton-pair decay channel is presented. The analysis relies on final states featuring fully hadronic decays of the top quarks and the $τ$-leptons. It employs data samples of proton--proton collisions at $\sqrt{s}=13$ and 13.6 TeV recorded with the ATLAS detector at the CERN Large Hadron Collider and corresponding to integrated luminosities of 140 fb$^{-1}$ and 161 fb$^{-1}$, respectively. The measured signal strength ($μ$), defined as the measured cross-section normalised to the Standard Model prediction, is $μ_{t\bar{t}H}=1.51^{+0.71}_{-0.62}$ for $t\bar{t}H$ and $μ_{tH}=-0.4^{+5.6}_{-5.1}$ for $tH$. Additionally, the $t\bar{t}H$ cross-section is measured differentially in three bins of the Higgs boson transverse momentum in the simplified template cross-section framework.
Comments37 pages in total, author list starting page 21, 5 figures, 2 tables, submitted to JHEP. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGP-2024-52/
