论文标题
在$ \ mathrm {\ sqrt {\ sqrt {s} = 13} $ tev的proton $ - $ proton碰撞中的S-enchanel中单夸克的测量
Measurement of single top-quark production in the s-channel in proton$-$proton collisions at $\mathrm{\sqrt{s}=13}$ TeV with the ATLAS detector
论文作者
论文摘要
在S通道中，在质子$ - $质子碰撞中，以13 TEV的质子质子碰撞进行了单个Quark生产的测量，该质子质子碰撞在13 TEV中，在CERN大型强子对撞机的ATLAS探测器中进行。数据集对应于139 fb $^{ - 1} $的集成光度。该分析是对具有电子或MUON的事件进行的，在最终状态下缺少横向动量，正好恰好是两个$ b $的喷气机。基于矩阵元素计算的判别剂用于将单顶Quark S渠道事件与主要背景贡献分开，这些事件与Jets相关。 The observed (expected) signal significance over the background-only hypothesis is 3.3 (3.9) standard deviations, and the measured cross-section is $σ=8.2^{+3.5}_{-2.9}$ pb, consistent with the Standard Model prediction of $σ^{\mathrm{SM}}=10.32^{+0.40}_{-0.36}$ pb。
A measurement of single top-quark production in the s-channel is performed in proton$-$proton collisions at a centre-of-mass energy of 13 TeV with the ATLAS detector at the CERN Large Hadron Collider. The dataset corresponds to an integrated luminosity of 139 fb$^{-1}$. The analysis is performed on events with an electron or muon, missing transverse momentum and exactly two $b$-tagged jets in the final state. A discriminant based on matrix element calculations is used to separate single-top-quark s-channel events from the main background contributions, which are top-quark pair production and $W$-boson production in association with jets. The observed (expected) signal significance over the background-only hypothesis is 3.3 (3.9) standard deviations, and the measured cross-section is $σ=8.2^{+3.5}_{-2.9}$ pb, consistent with the Standard Model prediction of $σ^{\mathrm{SM}}=10.32^{+0.40}_{-0.36}$ pb.
