论文标题
使用有效的字段理论，在Proton-Proton碰撞中搜索Quark Production的新物理学，并在Proton-Proton碰撞中使用额外的Lepton
Search for new physics in top quark production with additional leptons in proton-proton collisions at $\sqrt{s} =$ 13 TeV using effective field theory
论文作者
论文摘要
在有效的现场理论（EFT）的框架内，使用包含一个或多个带有附加液体的顶级夸克的事件来搜索新物理。该数据对应于质子质子碰撞的41.5 fb $^{ - 1} $在LHC的13 tev中心能量的质子质子碰撞，CMS实验在2017年收集的质子 - 质子碰撞。选定的事件必须具有相同电荷的两个lept子，要么具有相同的电荷或超过两个leptons;还需要喷气机，包括已识别的Quark喷气机，并且根据这些对象的多重性将所选事件分为类别。在此分析中考虑了16个六个二维操作员，这些操作员可能会影响涉及带有其他带电瘦素的顶级夸克的过程。该分析是为了直接靶向EFT效应的，采用了一种新的方法，其中观察到的收率是根据EFT算子的Wilson系数（WC）进行参数化的。执行16个WC的同时拟合数据，并提取两个标准的偏差置信区间； WC值的标准模型期望在所有探测的WC的间隔内。
Events containing one or more top quarks produced with additional prompt leptons are used to search for new physics within the framework of an effective field theory (EFT). The data correspond to an integrated luminosity of 41.5 fb$^{-1}$ of proton-proton collisions at a center-of-mass energy of 13 TeV at the LHC, collected by the CMS experiment in 2017. The selected events are required to have either two leptons with the same charge or more than two leptons; jets, including identified bottom quark jets, are also required, and the selected events are divided into categories based on the multiplicities of these objects. Sixteen dimension-six operators that can affect processes involving top quarks produced with additional charged leptons are considered in this analysis. Constructed to target EFT effects directly, the analysis applies a novel approach in which the observed yields are parameterized in terms of the Wilson coefficients (WCs) of the EFT operators. A simultaneous fit of the 16 WCs to the data is performed and two standard deviation confidence intervals for the WCs are extracted; the standard model expectations for the WC values are within these intervals for all of the WCs probed.
