five

"Table 51" 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"

收藏
Mendeley Data2024-06-25 更新2024-06-29 收录
下载链接:
https://www.hepdata.net/record/101149
下载链接
链接失效反馈
官方服务:
资源简介:
- 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.

- 本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道单顶夸克产生过程的详细测量结果。该分析使用ATLAS实验在大型强子对撞机上采集的、质心系能量为8 TeV的质子-质子碰撞数据,积分亮度为$20.2~mathrm{fb}^{-1}$。针对顶夸克与顶反夸克的产生过程,分别测量了总截面(total cross-section)、 fiducial截面(fiducial cross-section)与微分截面(differential cross-section)。顶夸克的 fiducial截面测量精度为$5.8~\%$,顶反夸克的该截面测量精度为$7.8~\%$。顶夸克产生的总截面为$sigma_mathrm{tot}(tmathrm{q}) = 56.7^{+4.3}_{-3.8};mathrm{pb}$,顶反夸克产生的总截面为$sigma_mathrm{tot}(ar{t}mathrm{q}) = 32.9^{+3.0}_{-2.7};mathrm{pb}$,上述结果与标准模型(Standard Model)的理论预言一致。此外,顶夸克与顶反夸克产生截面之比被测定为$R_t=1.72 pm 0.09$。针对顶夸克与顶反夸克,分别在部分子层次(parton level)与粒子层次(particle level)测量了以其横向动量和快度为自变量的微分截面。同时,在粒子层次测量了t道散射过程中伴随喷注的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,MC)预言以及现有可获取的固定阶量子色动力学(QCD)计算结果进行了比对验证。
创建时间:
2023-06-28
二维码
社区交流群
二维码
科研交流群
商业服务