Determination of the top-quark pole mass using t t ¯ $$ t\overline{t} $$ + 1-jet events collected with the ATLAS experiment in 7 TeV pp collisions
Determination of the top-quark pole mass using t t ¯ $$ t\overline{t} $$ + 1-jet events collected with the ATLAS experiment in 7 TeV pp collisions
复制标题
使用通过 ATLAS 实验在 7 TeV pp 碰撞中收集的 t t � $$ toverline{t} $$ 1-jet 事件确定顶夸克极质量
DOI：
10.1007/jhep10(2015)121
复制
发表时间：
2015
影响因子：
5.4
通讯作者：
Aad G
中科院分区：
文献类型：
--
作者：
Aad G
本文研究了至少有一个喷注的顶夸克对产生的归一化微分截面随+1喷注系统不变质量的倒数的变化。由于胶子辐射依赖于夸克的质量，因此这种分布可以用来精确地确定顶夸克的质量。实验分析基于ATLAS探测器在LHC收集的质子-质子碰撞数据，质心能量为7 TeV，对应的积分光度为4.6 fb− 1。选定的事件是使用轻子+喷流顶夸克对衰变通道确定的，其中轻子指的是电子或μ子。所观察到的分布进行比较，在下一个领先的阶精度在量子色动力学使用的极点质量计划的理论预测。用这种方法，顶夸克极质量的测量值，m极t，是：
The normalized differential cross section for top-quark pair production in association with at least one jet is studied as a function of the inverse of the invariant mass of the+ 1-jet system. This distribution can be used for a precise determination of the top-quark mass since gluon radiation depends on the mass of the quarks. The experimental analysis is based on proton-proton collision data collected by the ATLAS detector at the LHC with a centre-of-mass energy of 7 TeV corresponding to an integrated luminosity of 4.6 fb− 1. The selected events were identified using the lepton+ jets top-quark-pair decay channel, where lepton refers to either an electron or a muon. The observed distribution is compared to a theoretical prediction at next-to-leading-order accuracy in quantum chromodynamics using the pole-mass scheme. With this method, the measured value of the top-quark pole mass, m pole t, is: