"Table 64" 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"
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- 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.
该数据集基于欧洲核子研究中心大型强子对撞机(CERN-LHC),呈现了t道(t-channel)单顶夸克产生过程的详细测量结果。本分析使用了大型强子对撞机(LHC)上超环面仪器(ATLAS)在质子-质子对撞质心系能量为8太电子伏特(TeV)时采集的20.2反飞靶(fb⁻¹)积分亮度数据。针对顶夸克与顶反夸克的产生过程,本研究分别测量了总截面、 fiducial截面(fiducial cross-section)与微分截面。顶夸克产生的fiducial截面测量精度为5.8%,顶反夸克产生的则为7.8%。顶夸克产生的总截面测量结果为$sigma_mathrm{tot}(tq) = 56.7^{+4.3}_{-3.8};mathrm{pb}$,顶反夸克产生的总截面测量结果为$sigma_mathrm{tot}(ar{t} q) = 32.9^{+3.0}_{-2.7};mathrm{pb}$,该结果与标准模型(Standard Model)的理论预言相符。此外,本测量确定顶夸克与顶反夸克产生截面的比值为$R_t=1.72 pm 0.09$。针对顶夸克与顶反夸克的横动量(transverse momentum)和快度(rapidity)的微分截面,本研究在部分子(parton)层次与粒子层次上均完成了测量。针对t道散射过程中伴随喷注的横动量与快度微分截面,本研究在粒子层次上完成了测量。所有测量结果均与多种蒙特卡洛(Monte Carlo)预言及现有微扰量子色动力学(QCD)固定阶计算结果进行了比对。



