论文标题
在多重TEV紧凑型线性对撞机上，在顶级Quark对生产中增强拓扑的物理潜力
Physics potential for boosted topologies in top-quark pair production at a multi-TeV Compact Linear Collider
论文作者
论文摘要
在拟议的高亮度线性电子峰紧凑型线性碰撞器（CLIC）上，研究了在Quark对生产中增强拓扑的物理潜力。本文提供的分析重点是“单一Lepton+Jets” TTBAR最终状态，并应用喷气子结构技术来探索高于1 TEV以上的高度准直的喷气环境。带电的Lepton用于确定两个顶级夸克的电荷。我们介绍了运动区域中TTBAR生产横截面和前进的不对称性的结果，考虑到CLIC亮度谱和初始状态辐射，有效碰撞能量高于1.2 TEV（2.6 TEV），用于1.4 TEV（3 TEV）。结果基于详细的蒙特卡洛模拟研究，其基于GEANT4的仿真基于CLIC_ILD检测器概念和基于粒子流的事件重建。所有考虑的数据样本包括梁诱导的背景和其他相关背景过程。在1.4 TEV（3 TEV）的运行中，TTBAR生产横截面和前向不对称的预期精度分别为1.1％（2.0％）和1.4％（2.3％），其集成亮度为2.0逆亮度为2.0逆Attobarn（4.0逆Attobarn）和-80％的电位偏振。为了超出标准模型覆盖范围的改进，在 +80％电子极化下还可以预见运行，集成的光度为0.5逆Attobarn（1.0逆Attobarn）在1.4 TEV（3 TEV）的情况下，相应的数字约为2.5。
The physics potential for boosted topologies in top-quark pair production is studied at centre-of-mass energies of 1.4 TeV and 3 TeV at the proposed high-luminosity linear electron-positron Compact Linear Collider (CLIC). The analyses presented in this paper focus on "single lepton+jets" ttbar final states and apply jet sub-structure techniques to explore the highly collimated jet environment above 1 TeV. The charged lepton is used to determine the charge of both top quarks. We present results for the ttbar production cross section and the forward-backward asymmetry in the kinematic region where the effective collision energy is above 1.2 TeV (2.6 TeV) for operation at 1.4 TeV (3 TeV), taking into account the CLIC luminosity spectrum and initial-state radiation. The results are based on detailed Monte Carlo simulation studies with a GEANT4 based simulation of the CLIC_ILD detector concept and particle-flow based event reconstruction. All data samples considered include beam-induced backgrounds and other relevant background processes. The expected precision on the ttbar production cross section and the forward-backward asymmetry are 1.1% (2.0%) and 1.4% (2.3%), respectively, for operation at 1.4 TeV (3 TeV) with an integrated luminosity of 2.0 inverse attobarn (4.0 inverse attobarn) and with -80% electron polarisation. For improved Beyond Standard Model reach, operation is also foreseen at +80% electron polarisation, with an integrated luminosity of 0.5 inverse attobarn (1.0 inverse attobarn) at 1.4 TeV (3 TeV), where the corresponding numbers are about a factor 2.5 higher.
