论文标题
在$ \ sqrt {s} = $ 13 tev的质子 - 普罗顿碰撞中的Z玻色子，光子和两个喷气式的横截面的测量
Measurement of the cross section for electroweak production of a Z boson, a photon and two jets in proton-proton collisions at $\sqrt{s} =$ 13 TeV and constraints on anomalous quartic couplings
论文作者
论文摘要
提出了横截面的测量值，用于将Z玻色子的电子产生和一个与Proton-Proton碰撞的两个Jet（Z $γ$ JJ）相关的光子。 Z玻色子候选物是通过其衰减中选择的一对电子或MUON的。感兴趣的过程，即Electroweak Z $γ$ JJ的生产，通过选择具有较大的Dijet质量的事件和两个喷气式飞机之间的较大的伪差差异来隔离。该测量基于在$ \ sqrt {s} = $ 13 tev的CMS实验中收集的数据，对应于35.9 fb $^{ - 1} $的集成光度。观察到的信号的显着性是3.9标准偏差，其中预期在标准模型中有5.2标准偏差的显着性。这些结果与CMS在$ \ sqrt {s} = $ 8 TEV上发布的结果结合在一起，这导致观察到的和预期的4.7和5.5标准偏差的显着性。从13个TEV数据中，获得了电子信号强度Z $γ$ JJ的产生的值，并且在Dimension-ofermension-ofermension-oferension-offortion-officition boson相互作用的框架中给出了界限。
A measurement is presented of the cross section for electroweak production of a Z boson and a photon in association with two jets (Z$γ$jj) in proton-proton collisions. The Z boson candidates are selected through their decay into a pair of electrons or muons. The process of interest, electroweak Z$γ$jj production, is isolated by selecting events with a large dijet mass and a large pseudorapidity gap between the two jets. The measurement is based on data collected at the CMS experiment at $\sqrt{s} =$ 13 TeV, corresponding to an integrated luminosity of 35.9 fb$^{-1}$. The observed significance of the signal is 3.9 standard deviations, where a significance of 5.2 standard deviations is expected in the standard model. These results are combined with published results by CMS at $\sqrt{s} =$ 8 TeV, which leads to observed and expected respective significances of 4.7 and 5.5 standard deviations. From the 13 TeV data, a value is obtained for the signal strength of electroweak Z$γ$jj production and bounds are given on quartic vector boson interactions in the framework of dimension-eight effective field theory operators.
