Title: Vector boson scattering and anomalous quartic couplings in final states with $\ellν$qq or $\ell\ell$qq plus jets using proton-proton collisions at $\sqrt{s}$ = 13 TeV Show Chinese title

Title: 矢量玻色子散射和最终态中带有$\ellν$qq 或$\ell\ell$qq 加喷注的异常四粒子耦合，使用质子-质子碰撞在$\sqrt{s}$ = 13 TeV条件下进行的研究

Abstract: A measurement is presented of the electroweak vector boson scattering production of ZV (V = W, Z) boson pairs associated with two jets in proton-proton collisions at a center-of-mass energy of 13 TeV. The data, corresponding to an integrated luminosity of 138 fb$^{-1}$, were collected at the CERN LHC with the CMS detector during the 2016$-$2018 data-taking period. The analysis targets final states with a pair of isolated electrons or muons from Z boson decays and three or four jets, depending on the momentum of the vector boson that decays into quarks. Signal strength is measured for events characterized by a large invariant mass of two forward jets with a wide pseudorapidity gap between them. The electroweak production of ZV in association with two jets is measured with an observed (expected) significance of 1.3 (1.8) standard deviations. A combination of the analyses of ZV channel and the previously published WV channel in the lepton plus jets final state places constraints on effective field theory parameters that describe anomalous electroweak production of WW, WZ, and ZZ boson pairs in association with two jets. Several world best limits are set on anomalous quartic gauge couplings in terms of dimension-8 standard model effective field theory operators. Show Chinese abstract

Abstract: 对在质子-质子碰撞中与两个喷注相关的ZV（V = W, Z）玻色子对的弱电矢量玻色子散射产生的测量。 数据对应的积分亮度为138 fb$^{-1}$，是在CERN LHC上使用CMS探测器在2016$-$2018数据采集期间收集的。 该分析针对最终状态，其中包括来自Z玻色子衰变的一对孤立电子或缪子以及三个或四个喷注，具体取决于衰变为夸克的矢量玻色子的动量。 对于具有两个前向喷注的大不变质量且它们之间有宽伪快度间隙的事件，测量了信号强度。 在与两个喷注相关的情况下，ZV的弱电生产被测量，其观测（预期）显著性为1.3（1.8）个标准差。 对ZV通道和之前发表的在轻子加喷注最终态中的WV通道的分析进行组合，对描述与两个喷注相关联的WW、WZ和ZZ玻色子对异常弱电生产的有效场论参数施加了限制。 在维度为8的标准模型有效场论算符方面，设定了若干世界最佳的异常四重规范耦合限制。