论文标题
使用$ \ text {t} \ bar {\ text {t}} $+JET EVENT在$ \ sqrt {s s} = $ 13 tev的cmms实验中，使用$ \ text {t} \ bar {\ text {t}} $ 13
Measurement of the top quark pole mass using $\text{t}\bar{\text{t}}$+jet events in the dilepton final state at $\sqrt{s}=$ 13 TeV with the CMS experiment
论文作者
论文摘要
在此贡献中，提出了对顶部夸克极质量$ m _ {\ text {t}}^{\ text {pole}} $的测量。与至少一个额外的一个能量喷射（$ \ text {t} \ bar {\ bar {\ text {t}} $+jet）相关的事件（$ \ text {t} \ bar {\ bar {\ bar {\ bar {\ text {t}} $）是与至少一个额外的能量喷气的合作的。使用CMS实验记录的数据集以13个TEV为13的质量中心能量，对应于36.3fb $^{ - 1} $的总集成光度。重建事件需要在最终状态中包含两个相反的瘦素。机器学习方法用于重建主要可观察事件分类。归一化的$ \ text {t} \ bar {\ text {t}} $+喷气生产横截面作为$ \ text {t} \ bar {\ bar {\ text {t}} $+喷气系统的不变性质量的函数，使用样品在parton级别测量了样品。 $ m _ {\ text {t}}^{\ text {pole}} $的值是通过使用两个parton分布函数（PDFS）进行比较与近代领先的理论预测来提取的。对于ABMP16Nlo PDF的参考集，结果值为$ M _ {\ text {t}}}^{\ text {pole}} = 172.94 \ pm1.37 $ gev。
In this contribution, a measurement of the top quark pole mass $m_{\text{t}}^{\text{pole}}$ is presented. Events where a top quark-antiquark pair ($\text{t}\bar{\text{t}}$) is produced in association with at least one additional energetic jet ($\text{t}\bar{\text{t}}$+jet) are analyzed. The data set recorded by the CMS experiment at a center-of-mass energy of 13 TeV, corresponding to a total integrated luminosity of 36.3fb$^{-1}$, is used. Reconstructed events are required to contain two opposite-sign leptons in the final state. Machine learning methods are employed for the reconstruction of the main observable event classification. The normalized $\text{t}\bar{\text{t}}$+jet production cross section as a function of the inverse of the invariant mass of the $\text{t}\bar{\text{t}}$+jet system is measured at the parton level using a likelihood unfolding method. The value for $m_{\text{t}}^{\text{pole}}$ is extracted by comparing the measurement to next-to-leading order theoretical predictions using two parton distribution functions (PDFs). For a reference set of the ABMP16NLO PDF, the resulting value is $m_{\text{t}}^{\text{pole}} = 172.94\pm1.37$ GeV.
