论文标题
观察两个喷气机和$ z $ -Boson对的Electroweak生产
Observation of electroweak production of two jets and a $Z$-boson pair
论文作者
论文摘要
Electroweak对称性破坏通过与Higgs场的相互作用来解释基本粒子质量的起源。除了希格斯玻色子特性的测量值外，对具有自旋旋转的巨大载体玻色子的散射还可以探测出静电对称对称性的性质。在与矢量 - 玻色子散射有关的所有过程中，两种喷气式飞机和$ z $ -Boson对的电动生产是罕见且重要的。在这里，我们报告了从质子 - 普罗顿碰撞数据的观察结果，该数据对应于在大型强子对撞机的Atlas检测器的13 TEV中记录的139/fb的综合光度。我们考虑了两个不同的最终状态，这些状态源自$ z $ -Boson对的衰减 - 一个包含四个带电的瘦素，另一个包含两个带电的Leptons和两个中微子。没有电动生产的假设被拒绝，统计显着性为5.7 $σ$，而测得的电片截面生产的横截面与标准模型预测一致。此外，我们还报告了包含$ z $ -Boson对的横截面和两个最终州的两次喷气式飞机。
Electroweak symmetry breaking explains the origin of the masses of elementary particles through their interactions with the Higgs field. Besides the measurements of the Higgs boson properties, the study of the scattering of massive vector bosons with spin one allows the nature of electroweak symmetry breaking to be probed. Among all processes related to vector-boson scattering, the electroweak production of two jets and a $Z$-boson pair is a rare and important one. Here we report the observation of this process from proton-proton collision data corresponding to an integrated luminosity of 139/fb recorded at a centre-of-mass energy of 13 TeV with the ATLAS detector at the Large Hadron Collider. We consider two different final states originating from the decays of the $Z$-boson pair - one containing four charged leptons and the other containing two charged leptons and two neutrinos. The hypothesis of no electroweak production is rejected with a statistical significance of 5.7 $σ$, and the measured cross-section for electroweak production is consistent with the standard model prediction. In addition, we report cross-sections for inclusive production of a $Z$-boson pair and two jets for the two final states.
