Measurement of the ttW and ttZ differential cross sections in proton proton collisions at 13 TeV with the ATLAS detector

该项目将使用ATLAS探测器收集的完整13 TeV数据集测量与Z或W玻色子相关的顶夸克对的差异产生截面。与矢量玻色子相关的tt事件产生的微分截面测量到目前为止还没有被测量过。测量本身不仅是有趣和重要的，而且是搜索标准模型（SM）预测偏差的有用工具，这些偏差可能是由于超出标准模型（BSM）效应造成的。由于BSM效应引起的任何偏离都可以使用SM有效场论（SMEFT）的框架以与模型无关的方式参数化。

This project will measure the differential production cross sections of a top-quark pair in association with a Z or W boson using the full 13 TeV dataset collected by the ATLAS detector. The differential cross section measurement of the associated production of tt events with a vector boson has, to date, never been measured. Not only is the measurement interesting and important to make in its own right, it is a useful tool to search for deviations from Standard Model (SM) predictions which could be due to Beyond the Standard Model (BSM) effects. Any deviations from the SM due to BSM effects can be parameterised in a model independent way using the framework of the SM Effective Field Theory (SMEFT).