The search for top and bottom partners is a major focus of analyses at both the ATLAS and CMS experiments. When singly produced, these vector-like partners of the Standard Model third generation quarks retain a sizeable cross-section that makes them attractive search candidates in their respective topologies. While most efforts have concentrated on the resonant mode for single production of these hypothetical particles, the most dominant mode at narrow widths, recent studies have revealed a wide and rich phenomenology involving the non-resonant diagrams. In this letter we categorically investigate the impact of the non-resonant diagrams on different top and bottom partner single production topologies and their impact on the inclusive cross-section estimation. We also propose a parameterization for calculating the correction factor to the single vector-like quark production cross-section when such diagrams are included.

寻找顶级和底部合作伙伴是 ATLAS 和 CMS 实验的主要分析重点。当单独生产时，标准模型第三代夸克的这些类矢量伙伴保留了相当大的横截面，这使它们在各自的拓扑中成为有吸引力的搜索候选者。虽然大多数努力都集中在这些假设粒子的单一产生的共振模式上，这是窄宽度的最主要模式，但最近的研究揭示了涉及非共振图的广泛而丰富的现象学。在这封信中，我们分类研究了非谐振图对不同的顶部和底部合作伙伴单一生产拓扑的影响及其对包容性横截面估计的影响。