论文标题
在Lepton+Jets Channel $ \ sqrt {s} = 13 \; $ tev the Atlas实验中的$ t \ bar {t} $生产横截面的生产横截面
Measurement of the $t\bar{t}$ production cross-section in the lepton+jets channel at $\sqrt{s}=13\;$TeV with the ATLAS experiment
论文作者
论文摘要
$ t \ bar {t} $生产横截面在Lepton+Jets通道中使用Proton $ - $ proton碰撞数据在LHC的Atlas检测器收集的$ \ sqrt {s} = 13 $ tev上以$ \ sqrt {s} = 13 $ tev的形式测量。数据集对应于139 fb $^{ - 1} $的集成光度。在最终状态下，恰好有一个被带电的Lepton和四个或更多喷气机的事件，至少有一个包含$ b $ - hadrons的喷气机，用于确定$ t \ bar {t} $生产横截面，通过概况类似类似。包含横截面的测量为$ {σ_{\ text {inc}} = 830 \ pm 0.4〜 \ text {（stat。）} \ pm 36〜 \ pm 36〜 \ text {（syst。结果与在扰动QCD中近代到领先顺序的理论计算一致。还测量了实验验收中的基准$ t \ bar {t} $横截面。
The $t\bar{t}$ production cross-section is measured in the lepton+jets channel using proton$-$proton collision data at a centre-of-mass energy of $\sqrt{s}=13$ TeV collected with the ATLAS detector at the LHC. The dataset corresponds to an integrated luminosity of 139 fb$^{-1}$. Events with exactly one charged lepton and four or more jets in the final state, with at least one jet containing $b$-hadrons, are used to determine the $t\bar{t}$ production cross-section through a profile-likelihood fit. The inclusive cross-section is measured to be ${σ_{\text{inc}} = 830 \pm 0.4~ \text{(stat.)}\pm 36~\text{(syst.)}\pm 14~\text{(lumi.)}~\mathrm{pb}}$ with a relative uncertainty of 4.6 %. The result is consistent with theoretical calculations at next-to-next-to-leading order in perturbative QCD. The fiducial $t\bar{t}$ cross-section within the experimental acceptance is also measured.
