"Table 44" of "Fiducial, total and differential cross-section measurements of $t$-channel single top-quark production in $pp$ collisions at 8 TeV using data collected by the ATLAS detector"

- CERN-LHC. Detailed measurements of $t$-channel single top-quark production are presented. They use $20.2~\mathrm{fb}^{-1}$ of data collected by the ATLAS experiment in proton--proton collisions at a centre-of-mass energy of 8 TeV at the LHC. Total, fiducial and differential cross-sections are measured for both top-quark and top-antiquark production. The fiducial cross-section is measured with a precision of $5.8~\%$ (top quark) and $7.8~\%$ (top antiquark), respectively. The total cross-sections are measured to be $\sigma_\mathrm{tot}(tq) = 56.7^{+4.3}_{-3.8}\;\mathrm{pb}$ for top-quark production and $\sigma_\mathrm{tot}(\bar{t} q) = 32.9^{+3.0}_{-2.7}\;\mathrm{pb}$ for top-antiquark production, in agreement with the Standard Model prediction. In addition, the ratio of top-quark to top-antiquark production cross-sections is determined to be $R_t=1.72 \pm 0.09$. The differential cross-sections as a function of the transverse momentum and rapidity of both the top quark and the top antiquark are measured at both the parton and particle levels. The transverse momentum and rapidity differential cross-sections of the accompanying jet from the $t$-channel scattering are measured at particle level. All measurements are compared to various Monte Carlo predictions as well as to fixed-order QCD calculations where available.

欧洲核子研究中心大型强子对撞机（CERN-LHC）相关研究展示了t道单顶夸克产生（t-channel single top-quark production）过程的精确测量结果。本次测量使用ATLAS实验在大型强子对撞机（LHC）上，于质心系能量8 TeV的质子-质子对撞中采集的20.2 fb⁻¹实验数据。针对顶夸克（top-quark）与顶反夸克（top-antiquark）的产生过程，研究团队分别测量了总截面、基准截面（fiducial cross-section）与微分截面。其中顶夸克的基准截面测量精度为5.8%，顶反夸克的基准截面测量精度为7.8%。顶夸克产生的总截面测量值为$sigma_mathrm{tot}(tq) = 56.7^{+4.3}_{-3.8};mathrm{pb}$，顶反夸克产生的总截面测量值为$sigma_mathrm{tot}(ar{t} q) = 32.9^{+3.0}_{-2.7};mathrm{pb}$，二者均与标准模型（Standard Model）的理论预言相符。此外，顶夸克与顶反夸克产生截面的比值被测定为$R_t=1.72 pm 0.09$。针对顶夸克与顶反夸克的横动量（transverse momentum）和快度（rapidity）分布，研究团队分别在部分子层次（parton level）与粒子层次（particle level）上测量了其微分截面；同时针对t道散射伴随喷注（jet）的横动量与快度分布，在粒子层次上测量了其微分截面。所有测量结果均与多种蒙特卡洛（Monte Carlo）预言以及现有可获取的固定阶量子色动力学（Quantum Chromodynamics, QCD）计算结果进行了对比。