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"Table 9" 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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Mendeley Data2024-06-25 更新2024-06-29 收录
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https://www.hepdata.net/record/122358
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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.

- 欧洲核子研究中心-大型强子对撞机(CERN-LHC):本工作呈现了t道单顶夸克(t-channel single top-quark)产生过程的详细测量结果。该分析使用了LHC上超环面仪器(ATLAS)实验在质心系能量8 TeV的质子-质子对撞中采集的20.2 fb⁻¹的数据样本。针对顶夸克与顶反夸克的产生过程,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,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向动量(transverse momentum)和快度(rapidity)分布,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。针对t道散射过程中伴随产生的喷注,我们在粒子层次上测量了其横向动量与快度的微分截面。所有测量结果均与多种蒙特卡洛(Monte Carlo)预言以及现有可得的固定阶量子色动力学(QCD)计算结果进行了比对。
创建时间:
2023-06-28
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