论文标题
搜索使用ATLAS检测器的单一生产,将v $ t $ quark腐烂到希格斯玻色子和顶级夸克,并具有完全强烈的最终状态
Search for single production of a vector-like $T$ quark decaying into a Higgs boson and top quark with fully hadronic final states using the ATLAS detector
论文作者
论文摘要
搜索使用ATLAS检测器在大型强子对撞机上使用ATLAS检测器进行搜索,将其类似于矢量的$ t $ quark腐烂,并在13个TEV Proton-Proton碰撞中进行Quark,并具有与139 fb $^{ - 1} $的集成亮度相对应的数据样本。 Higgs-Boson和Top-Quark候选者在全部衰减模式下确定,其中$ h \ to b \ bar {b} $和$ t \ to b w \ to b q \ b q \ bar {q}^\ prime $被重建为大型拉迪乌斯喷枪。使用标记算法鉴定了候选Higgs玻色子,顶级夸克和相关的B-HADRON。在背景之上未观察到没有显着的过量,因此根据质量,$ m_t $和耦合($κ_t$)的零件,$κ_t$的单句$ t $ quark的生产横截面设定了限制,类似于矢量$ t $ t $ t $ quark的标准模型颗粒。在考虑的质量范围为1.0至2.3 TEV之间,允许耦合值的上限以$ m_t $的上限从最小值$ 0.35的0.35 <$ m_t <$ m_t $ <1.4 $ <1.4 tev至1.6 tev to $ m_t $ = 2.3 tev。
A search is made for a vector-like $T$ quark decaying into a Higgs boson and a top quark in 13 TeV proton-proton collisions using the ATLAS detector at the Large Hadron Collider with a data sample corresponding to an integrated luminosity of 139 fb$^{-1}$. The Higgs-boson and top-quark candidates are identified in the all-hadronic decay mode, where $H\to b\bar{b}$ and $t\to b W \to b q \bar{q}^\prime$ are reconstructed as large-radius jets. The candidate Higgs boson, top quark, and associated B-hadrons are identified using tagging algorithms. No significant excess is observed above the background, so limits are set on the production cross-section of a singlet $T$ quark at 95% confidence level, depending on the mass, $m_T$, and coupling, $κ_T$, of the vector-like $T$ quark to Standard Model particles. In the considered mass range between 1.0 and 2.3 TeV, the upper limit on the allowed coupling values increases with $m_T$ from a minimum value of 0.35 for 1.07 < $m_T$ < 1.4 TeV to 1.6 for $m_T$ = 2.3 TeV.