论文标题
通过CMS和图腾实验搜索中央独家生产顶级夸克对
Search for central exclusive production of top quark pairs with the CMS and TOTEM experiments
论文作者
论文摘要
使用CMS和CMS-Totem Precision Procon Eppetionter收集的碰撞数据在2017年收集的碰撞数据，搜索顶级夸克对（$ \ MATHRM {t} \ bar {\ mathrm {t}} $）的搜索。在2017年收集的碰撞数据。将独家$ \ mathrm {t} \ bar {\ mathrm {t}} $信号与包含$ \ mathrm {t} \ bar {\ mathrm {t}} $背景显示了独家$ \ mathrm {t} \ bar {\ mathrm {t}} $的横截面上的第一个上限。
A search for central exclusive production of top quark pairs ($\mathrm{t}\bar{\mathrm{t}}$) is presented using collision data collected by CMS and the CMS-TOTEM Precision Proton Spectrometer in 2017. A data-driven method to estimate the background from coincidences of inclusive events and pileup protons is described, as well as the development of a Boosted Decision Tree classifier to separate the exclusive $\mathrm{t}\bar{\mathrm{t}}$ signal from the inclusive $\mathrm{t}\bar{\mathrm{t}}$ background. The first-ever upper limits on the cross section of exclusive $\mathrm{t}\bar{\mathrm{t}}$ are shown.
