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Possibility of Observing Charged Higgs in the Single Top Production Channel at LHC
International Journal of Theoretical Physics ( IF 1.4 ) Pub Date : 2021-01-08 , DOI: 10.1007/s10773-020-04664-1
Nadia Kausar , Ijaz Ahmed

Single top quark production through weak interactions is considered to be an important source of charged Higgs in the Minimal Super Symmetric Standard Model.In the s-channel single top production having largest cross-section may appear as a propagator in the form of heavy resonance state decaying to a pair of top and bottom quark. The process under investigation is \(pp \rightarrow H^{\pm }\rightarrow tb \rightarrow b\bar {b}W^{\pm } \rightarrow b\bar {b}\tau ^{\pm } \nu _{\tau }\), where top quark exclusively decays into a pair of bottom quark and W boson while W boson subsequently decays to τ jet and neutrino. So the final state is characterized by the presence of two b jets, hadronic τ decay and missing transverse energy. Within the presence of QCD multijet and electroweak background events at LHC, it has been demonstrated that the charged Higgs signal observability is possible within the available MSSM parameter space (tanβ, \(m_{H^{\pm }})\) respecting all experimental and theoretical constraints. In order to show the observability potential of charged Higgs, the exclusion curves at 95% confidence level and 5σ contours are plotted at different integrated luminosities with \(\sqrt {s}=\)14 TeV.



中文翻译:

在大型强子对撞机的单个顶部生产通道中观察带电希格斯的可能性

在最小超对称标准模型中,通过弱相互作用产生的单顶夸克产生被认为是带电希格斯的重要来源。在S通道中,具有最大横截面的单顶产生可能以重共振态的形式出现为繁殖体衰变成一对顶夸克。正在调查的过程是\(pp \ rightarrow H ^ {\ pm} \ rightarrow tb \ rightarrow b \ bar {b} W ^ {\ pm} \ rightarrow b \ bar {b} \ tau ^ {\ pm} \ nu _ {\ tau} \),其中顶夸克完全衰减为一对底夸克和W玻色子,而W玻色子随后衰减为τ射流和中微子。因此,最终状态的特征在于两个B射流的情况下,强子τ衰减和横向能量缺失。内的QCD升Multijet和弱电背景事件在LHC存在下,已经证实的是,荷电Higgs信号可观测是可能的可用MSSM参数空间内(TAN β\(M_ {H ^ {\下午}})\)尊重所有实验和理论约束。为了显示带电希格斯的可观察性潜力,在不同积分光度下(\ sqrt {s} = \) 14 TeV绘制了95%置信水平和等高线处的排除曲线。

更新日期:2021-01-08
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