论文标题
从LHC上的顶级夸克对签名。
Signature of a light charged Higgs boson from top quark pairs at the LHC
论文作者
论文摘要
带电的Higgs Boson是一种具有多个Higgs Doublets的标准模型扩展的吸烟枪，并已在各种对撞机实验中进行了搜索。在本文中，我们研究了LHC上顶夸克对产生的带有带电的希格斯玻色子的签名，随后的三体腐烂到W玻色子和一对底部夸克。在LHC 13 TEV的ATLAS合作中测量了两个W玻色子和四个底部夸克的最终状态的横截面。我们在带电的希格斯玻色子的情况下重新解释了实验数据，并找到了改进的协议。我们从LHC直接搜索三体衰减的总分支比（$ br（t \ rightarrow h^+b）\ times br（h^+\ rightArrow w^+b \ bar b）$以及对类型-I二型二型douplet模型的参数的最强直接约束。
The charged Higgs boson is a smoking gun of extensions of the standard model with multiple Higgs-doublets, and has been searched for at various collider experiments. In this paper, we study signature of a light charged Higgs boson produced by top quark pairs at the LHC, with subsequent three-body decays into a W boson and a pair of bottom quarks. Cross sections on final states of two W bosons plus four bottom quarks have been measured by the ATLAS collaboration at the LHC 13 TeV. We reinterpret the experimental data under the scenario of a light charged Higgs boson, and find improved agreements. We obtain the first limit from LHC direct searches on the total branching ratio of the three-body decay, $Br(t\rightarrow H^+b)\times Br(H^+\rightarrow W^+b\bar b)$, and the strongest direct constraints on the parameter space of a class of type-I two-Higgs-Doublet models.
