论文标题
在$ \ sqrt {s} $ = 13 TEV中搜索PP Collisions中违反顶级夸克耦合的CP
Search for CP violating top quark couplings in pp collisions at $\sqrt{s}$ = 13 TeV
论文作者
论文摘要
结果是通过在13 TEV的质量中心能量中使用质子 - 蛋白碰撞的质量污染物碰撞来搜索CP违规的搜索。用于此分析的数据由CMS实验收集的两个带电的瘦素的最终状态组成，对应于35.9 fb $^{ - 1} $的集成光度。该搜索使用两个可观察到的物品，$ \ Mathcal {O} _1 $和$ \ Mathcal {O} _3 $，是Lorentz标量。可疑的$ \ MATHCAL {O} _1 $是由带电的四元素和重建的顶级夸克构建的，而$ \ Mathcal {o} _3 $由带电的四元素和B Quarks的四摩Momenta组成。这些可观察物中的不对称性对违反CP敏感，它们的测量用于确定顶部夸克的染色体偶极矩。结果与标准模型的期望一致。
Results are presented from a search for CP violation in top quark pair production, using proton-proton collisions at a center-of-mass energy of 13 TeV. The data used for this analysis consist of final states with two charged leptons collected by the CMS experiment, and correspond to an integrated luminosity of 35.9 fb$^{-1}$. The search uses two observables, $\mathcal{O}_1$ and $\mathcal{O}_3$, which are Lorentz scalars. The observable $\mathcal{O}_1$ is constructed from the four-momenta of the charged leptons and the reconstructed top quarks, while $\mathcal{O}_3$ consists of the four-momenta of the charged leptons and the b quarks originating from the top quarks. Asymmetries in these observables are sensitive to CP violation, and their measurement is used to determine the chromoelectric dipole moment of the top quark. The results are consistent with the expectation from the standard model.
