论文标题
在$ \ sqrt {s} = $ 13 tev的质子 - proton碰撞中，两种喷气式的两极喷射= $ 13 tev
Measurements of production cross sections of polarized same-sign W boson pairs in association with two jets in proton-proton collisions at $\sqrt{s} =$ 13 TeV
论文作者
论文摘要
报道了质子 - 质子 - $ boson $ boson对质子 - 普罗顿碰撞的两极分化sign w $^\ pm $ w $^\ pm $ w $^\ pm的首次测量。测量结果基于在LHC处用CMS检测器收集的数据样本，该中心能量为13 TEV，对应于137 fb $^{ - 1} $的集成光度。通过恰好需要两个相同符号的瘦素，电子或哑光，中度缺失的横向动量以及两个具有较大速度分离的喷气机和一个较大的dijet质量来选择事件，以增强同一符号W $^\ pm $ w $ w $ w $ w $^\ pm $散射事件的贡献。观察到的（预期的）95％置信度上限为1.17（0.88）FB，在纵向极化的相同符号w $^\ pm $ w $^$ w $^\ pm $ boson对的生产横截面上设置。测量的（预期）显着性为2.3（3.1）标准偏差，具有至少一个W玻色子纵向极化的相同符号W $^\ pm $ w $ w $ w $^\ pm $ boson对。
The first measurements of production cross sections of polarized same-sign W$^\pm$W$^\pm$ boson pairs in proton-proton collisions are reported. The measurements are based on a data sample collected with the CMS detector at the LHC at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 137 fb$^{-1}$. Events are selected by requiring exactly two same-sign leptons, electrons or muons, moderate missing transverse momentum, and two jets with a large rapidity separation and a large dijet mass to enhance the contribution of same-sign W$^\pm$W$^\pm$ scattering events. An observed (expected) 95% confidence level upper limit of 1.17 (0.88) fb is set on the production cross section for longitudinally polarized same-sign W$^\pm$W$^\pm$ boson pairs. The electroweak production of same-sign W$^\pm$W$^\pm$ boson pairs with at least one of the W bosons longitudinally polarized is measured with an observed (expected) significance of 2.3 (3.1) standard deviations.
