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首页> 外文期刊>Physical review letters >Observation of Electroweak Production of Same-Sign W Boson Pairs in the Two Jet and Two Same-Sign Lepton Final State in Proton-Proton Collisions at s~(1/2) = 13 TeV
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Observation of Electroweak Production of Same-Sign W Boson Pairs in the Two Jet and Two Same-Sign Lepton Final State in Proton-Proton Collisions at s~(1/2) = 13 TeV

机译:在S〜(1/2)= 13 TEV的Proton-Proton碰撞中,在两次喷射和两个相同标志Lepton最终状态下的相同符号W玻色子对的电挖掘

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摘要

The first observation of electroweak production of same-sign W boson pairs in proton-proton collisions is reported. The data sample corresponds to an integrated luminosity of 35.9 fb(-1) collected at a center-of-mass energy of 13 TeV with the CMS detector at the LHC. Events are selected by requiring exactly two leptons (electrons or muons) of the same charge, moderate missing transverse momentum, and two jets with a large rapidity separation and a large dijet mass. The observed significance of the signal is 5.5 standard deviations, where a significance of 5.7 standard deviations is expected based on the standard model. The ratio of measured event yields to that expected from the standard model at leading order is 0.90 +/- 0.22. A cross section measurement in a fiducial region is reported. Bounds are given on the structure of quartic vector boson interactions in the framework of dimension-8 effective field theory operators and on the production of doubly charged Higgs bosons.
机译:报道了质子 - 质子碰撞中相同符号W玻色子对的Electweak生产的首次观察。 数据样本对应于在13 TEV的核心能量中收集的35.9fb(-1)的集成光度,其中CMS检测器在LHC处。 通过要求相同的电荷,适度缺失的横向动量和两个具有大的快速分离和大的Dijet质量的喷射器来选择事件。 所观察到的信号的意义是5.5标准偏差,其中基于标准模型预期了5.7标准偏差的重要性。 测量事件的比率对前导订单中标准模型的预期值为0.90 +/- 0.22。 报道了基准区域中的横截面测量。 关于维度-8有效现场理论操作员框架中的四分之一矢量玻色子相互作用的结构以及双电荷的HIGGS玻色子的生产。

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