论文标题
在Lepton+Jets Channel $ pp $ collisisionS $ \ sqrt {s} $ = 7 TEV与Atlas检测器使用支持向量机器的$ pp $ collisions中的包含$ t \ bar {t} $生产横截面
Measurement of the inclusive $t\bar{t}$ production cross section in the lepton+jets channel in $pp$ collisions at $\sqrt{s}$= 7 TeV with the ATLAS detector using support vector machines
论文作者
论文摘要
提出了对Lepton+Jets Decay通道中顶级夸克配对截面的测量。它基于$ \ sqrt {s} = 7 $ tev $ pp $ collision数据的4.6 fb $^{ - 1} $，由Cern大型强子碰撞器的Atlas实验收集。基于支持向量机的三级，多维事件分类器用于区分$ t \ bar {t} $事件与背景。发现$ t \ bar {t} $生产横截面为$σ_{t \ bar {t}} = 168.5 \ pm 0.7 $（stat。）$^{+6.2} _ { - 5.9} $（syst。syst。syst。结果与基于近代到领先顺序的QCD计算的标准模型预测一致。
A measurement of the top quark pair-production cross section in the lepton+jets decay channel is presented. It is based on 4.6 fb$^{-1}$ of $\sqrt{s} = 7$ TeV $pp $ collision data collected during 2011 by the ATLAS experiment at the CERN Large Hadron Collider. A three-class, multidimensional event classifier based on support vector machines is used to differentiate $t\bar{t}$ events from backgrounds. The $t\bar{t}$ production cross section is found to be $σ_{t\bar{t}}=168.5 \pm 0.7$(stat.)$^{+6.2}_{-5.9}$(syst.)$^{+3.4}_{-3.2}$(lumi.) pb. The result is consistent with the Standard Model prediction based on QCD calculations at next-to-next-to-leading order.
