论文标题
观察到电动发射的w $γ$的电动生产，两种喷气式质子proton碰撞，$ \ sqrt {s} = $ 13 tev
Observation of electroweak production of W$γ$ with two jets in proton-proton collisions at $\sqrt{s} = $ 13 TeV
论文作者
论文摘要
提出了第一个观察结果，用于在质子 - 蛋白质碰撞中产生W玻色子，光子和两个喷气机的电。通过需要一个鉴定出的电子或兆子和横向动量中的不平衡来选择W玻色子衰变。这两个喷气机必须具有较高的甲状腺素质量和伪造性的较大分离。该测量基于用CMS检测器收集的数据，该数据在13 TEV的质量中心能量中，对应于35.9 fb $^{ - 1} $的集成光度。该过程的观察到（预期）意义是4.9（4.6）标准偏差。与先前报道的CMS结果在8 TEV时结合后，观察到的（预期）显着性为5.3（4.8）标准偏差。在受限的信托区域中的Electroweak W $γ$ JJ生产的横截面为20.4 $ \ pm $ 4.5 fb，在同一基金区域中与2种喷头的W $γ$生产的总横截面为108 $ \ pm $ 16 fb。所有结果都与最近的理论预测非常吻合。根据维度8的有效现场理论运算符，对异常的四分位量规耦合放置了约束。
A first observation is presented for the electroweak production of a W boson, a photon, and two jets in proton-proton collisions. The W boson decays are selected by requiring one identified electron or muon and an imbalance in transverse momentum. The two jets are required to have a high dijet mass and a large separation in pseudorapidity. The measurement is based on data collected with the CMS detector at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb$^{-1}$. The observed (expected) significance for this process is 4.9 (4.6) standard deviations. After combining with previously reported CMS results at 8 TeV, the observed (expected) significance is 5.3 (4.8) standard deviations. The cross section for the electroweak W$γ$jj production in a restricted fiducial region is measured as 20.4 $\pm$ 4.5 fb and the total cross section for W$γ$ production in association with 2 jets in the same fiducial region is 108 $\pm$ 16 fb. All results are in good agreement with recent theoretical predictions. Constraints are placed on anomalous quartic gauge couplings in terms of dimension-8 effective field theory operators.
