论文标题
WZ和同符号WW玻色子对生产横截面的测量与$ \ sqrt {s} = $ 13 TEV的Proton-Proton碰撞中的两个喷气式
Measurements of production cross sections of WZ and same-sign WW boson pairs in association with two jets in proton-proton collisions at $\sqrt{s} =$ 13 TeV
论文作者
论文摘要
报告了$ \ sqrt {s} = $ 13 tev the LHC的质子 - 普罗顿碰撞中的两种喷气式，对WZ的生产横截面和同符号WW玻色子对。数据样本对应于2016 - 2018年期间与CMS检测器收集的137 fb $^{ - 1} $的集成光度。测量在Leptonic衰减模式W $^\ pm $ z $ \ to $ $ \ ell^\pmν\ ell'^\ pm \ ell'^\ pm \ ell'^\ mp $和ww $ \ to $ $ \ ell^\ ell^\ ell^\pmν\ ell'^\ ell'^\ pmp pmp $ \ ell，where $ \ ell，where $ \ ell，wher差异基准横截面是射流和带电的Lepton对的不变质量的功能，以及领先的Lepton横向动量，用于WW生产，并且与标准模型预测一致。还测量了差异横截面对喷射对不变质量的依赖性用于WZ的产生。据报道，据报道，WZ玻色子对产生的电动作用，观察到的（预期）的显着性为6.8（5.3）标准偏差。在有效田间理论框架中，在四分之一载体玻色子相互作用的结构上获得了约束。
Measurements of production cross sections of WZ and same-sign WW boson pairs in association with two jets in proton-proton collisions at $\sqrt{s} =$ 13 TeV at the LHC are reported. The data sample corresponds to an integrated luminosity of 137 fb$^{-1}$, collected with the CMS detector during 2016-2018. The measurements are performed in the leptonic decay modes W$^\pm$Z $\to$ $\ell^\pmν\ell'^\pm\ell'^\mp$ and WW $\to$ $\ell^\pmν\ell'^\pmν$, where $\ell, \ell' = $ e, $μ$. Differential fiducial cross sections as functions of the invariant masses of the jet and charged lepton pairs, as well as of the leading-lepton transverse momentum, are measured for WW production and are consistent with the standard model predictions. The dependence of differential cross sections on the invariant mass of the jet pair is also measured for WZ production. An observation of electroweak production of WZ boson pairs is reported with an observed (expected) significance of 6.8 (5.3) standard deviations. Constraints are obtained on the structure of quartic vector boson interactions in the framework of effective field theory.
