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首页> 外文期刊>Physics Letters, B. Nuclear Physics and High Energy Physics >Search for single production of a heavy vector-like T quark decaying to a Higgs boson and a top quark with a lepton and jets in the final state
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Search for single production of a heavy vector-like T quark decaying to a Higgs boson and a top quark with a lepton and jets in the final state

机译:搜索单次生产沉重的载体,Quark腐烂到HIGGS BOSON和最终状态的顶级夸克和最终状态的喷气机

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摘要

A search for single production of vector-like top quark partners (T) decaying into a Higgs boson and atop quark is performed using data from pp collisions at acentre-of-mass energy of 13 TeV collected by the CMS experiment at the CERN LHC, corresponding to an integrated luminosity of 2.3 fb(-1). The top quark decay includes an electron or a muon while the Higgs boson decays into a pair of b quarks. No significant excess over standard model backgrounds is observed. Exclusion limits on the product of the production cross section and the branching fraction are derived in the T quark mass range 700 to 1800 GeV. For a mass of 1000 GeV, values of the product of the production cross section and the branching fraction greater than 0.8 and 0.7 pb are excluded at 95% confidence level, assuming left-and right-handed coupling of the T quark to standard model particles, respectively. This is the first analysis setting exclusion limits on the cross section of singly produced vector-like T quarks at a centre-of-mass energy of 13 TeV. (C) 2017 The Author(s). Published by Elsevier B.V.
机译:搜索单一生产的矢量状顶部夸克伙伴(t)腐烂进入HIGGS BOSON和ATOP QUARK,在CERN LHC中的CMS实验收集的13 TEV的群体互能下的PP碰撞,对应于2.3 fb(-1)的集成光度。顶部夸克衰减包括电子或μ子,而Higgs玻色子衰减成一对B夸克。观察到标准型号背景上没有明显过量的过剩。产量横截面和分支级分的产物上的排斥限制在T夸克质量范围700至1800 GEV中得出。质量为1000 GEV,产量横截面的产物的值和大于0.8和0.7pb的分支馏分在95%的置信水平下排除,假设T夸克与标准模型颗粒的左右右手耦合, 分别。这是第一次分析设置在13 Tev的质量中心能量的单独产生的载体样T夸克的横截面上的排除限制。 (c)2017年作者。由elsevier b.v出版。

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