标题： 在 $\sqrt{s}$ = 13.6 TeV 质子-质子对撞中 WZ 产生截面的包含性测量 显示英文标题

标题： Measurement of the inclusive WZ production cross section in pp collisions at $\sqrt{s}$ = 13.6 TeV

摘要： 在质心能量为 13.6 TeV 的质子-质子碰撞中测量了包含 WZ 生产截面，并使用 2022 年 CMS 探测器收集的数据，对应的综合亮度为 34.7 fb$^{-1}$。 该测量使用多轻子最终态，并对四个不同轻子味类别（eee、ee$\mu$、$\mu\mu $e 和$\mu\mu\mu$）的事件数进行同时似然拟合。 选择过程旨在最小化背景事件的数量，并依赖于有效的即时轻子鉴别策略。 WZ产生截面是在一个以Z玻色子质量为中心、包含30 GeV窗口的相空间内测量的，即 $\sigma_{\text{total}}$(pp $\to$ WZ) = 55.2 $\pm$ 1.2（统计）$\pm$ 1.2（系统）$\pm$ 0.8（亮度）$\pm$ 0.3（理论） pb。 此外，在更接近探测器级要求的限定相空间内也测量了截面。 本文中呈现的所有测量结果均与标准模型预测一致。 显示英文摘要

摘要： The inclusive WZ production cross section is measured in proton-proton collisions at a centre-of-mass energy of 13.6 TeV, using data collected during 2022 with the CMS detector, corresponding to an integrated luminosity of 34.7 fb$^{-1}$. The measurement uses multileptonic final states and a simultaneous likelihood fit to the number of events in four different lepton flavour categories: eee, ee$\mu$, $\mu\mu $e, and $\mu\mu\mu$. The selection is optimized to minimize the number of background events, and relies on an efficient prompt lepton discrimination strategy. The WZ production cross section is measured in a phase space defined within a 30 GeV window around the Z boson mass, as $\sigma_{\text{total}}$(pp $\to$ WZ) = 55.2 $\pm$ 1.2 (stat) $\pm$ 1.2 (syst) $\pm$ 0.8 (lumi) $\pm$ 0.3 (theo) pb. In addition, the cross section is measured in a fiducial phase space closer to the detector-level requirements. All the measurements presented in this paper are in agreement with standard model predictions.