论文标题
在$ \ sqrt {s} = 13 $ tev的$ pp $碰撞中观察$ www $生产
Observation of $WWW$ Production in $pp$ Collisions at $\sqrt{s} = 13$ TeV with the ATLAS Detector
论文作者
论文摘要
这封信报告了使用139 fb $^{ - 1} $对$ www $生产的观察以及对其横截面的测量值，该质子 - 普罗顿碰撞数据记录在大型Hadron Collider的Atlas检测器13 TEV的质量中心。选择了两个相同词素（电子或MUON）和至少两个喷气机以及带有三个带电瘦素的事件的事件。然后使用多元技术来区分信号和背景事件。观察到$ www $生产的事件的重要性为8.0标准偏差，预期为5.4标准偏差。 The inclusive $WWW$ production cross section is measured to be $820 \pm 100\,\text{(stat)} \pm 80\,\text{(syst)}$ fb, approximately 2.6 standard deviations from the predicted cross section of $511 \pm 18$ fb calculated at next-to-leading-order QCD and leading-order electroweak accuracy.
This Letter reports the observation of $WWW$ production and a measurement of its cross section using 139 fb$^{-1}$ of proton-proton collision data recorded at a center-of-mass energy of 13 TeV by the ATLAS detector at the Large Hadron Collider. Events with two same-sign leptons (electrons or muons) and at least two jets, as well as events with three charged leptons, are selected. A multivariate technique is then used to discriminate between signal and background events. Events from $WWW$ production are observed with a significance of 8.0 standard deviations, where the expectation is 5.4 standard deviations. The inclusive $WWW$ production cross section is measured to be $820 \pm 100\,\text{(stat)} \pm 80\,\text{(syst)}$ fb, approximately 2.6 standard deviations from the predicted cross section of $511 \pm 18$ fb calculated at next-to-leading-order QCD and leading-order electroweak accuracy.
