Electroweak top couplings, partial compositeness, and top partner searches
Electroweak top couplings, partial compositeness, and top partner searches
复制标题
DOI：
10.1103/physrevd.102.075021
复制
发表时间：
2020-06
影响因子：
5
通讯作者：
Stephen Brown;C. Englert;P. Galler;Panagiotis Stylianou
中科院分区：
文献类型：
--
作者：
Stephen Brown;C. Englert;P. Galler;Panagiotis Stylianou
部分顶夸克复合性是强电弱对称性破缺理论的一个重要方面。这些理论与将顶夸克质量提升到观测值的重顶夸克一起预测了顶夸克的电弱耦合的相关修改。因此，相关的测量提供了直接的约束紫外结构的基础hypercolour动力学。在本文中，我们采用了最小版本的顶部复合讨论如何测量相关的顶部的电弱规范相互作用可以告知潜在的复合性质的TeV规模。在这样做的时候，我们确定的主导因素，限制BSM的灵敏度。外推到未来的100 TeV强子对撞机，我们表明，顶夸克测量进行最高精度可以提供互补的信息，共振搜索进行一个代表性的共振顶级合作伙伴搜索，专门针对相关的共振电弱顶级合作伙伴签名。
Partial top quark compositeness is a crucial aspect of theories with strong electroweak symmetry breaking. Together with the heavy top partners that lift the top quark mass to its observed value, these theories predict correlated modifications of the top quark's electroweak couplings. Associated measurements therefore provide direct constraints on the ultraviolet structure of the underlying hypercolour dynamics. In this paper we employ a minimal version of top compositeness to discuss how measurements related to the top's electroweak gauge interactions can inform the potential composite nature of the TeV scale. In doing so, we identify the dominant factors that limit the BSM sensitivity. Extrapolating to a future 100 TeV hadron collider, we demonstrate that top quark measurements performed at highest precision can provide complementary information to resonance search by performing a representative resonant top partner search that specifically targets the correlated resonant electroweak top partner signatures.