Multi-lepton signatures of vector-like leptons with flavor

Multi-lepton signatures of vector-like leptons with flavor
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具有风味的类矢量轻子的多轻子特征

DOI:
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发表时间:
2020
期刊:
The European Physical Journal C
影响因子:
--
通讯作者:
D. Litim
D. Litim
中科院分区:
--
文献类型:
--
作者:
Stefan Bißmann;G. Hiller;Clara Hormigos;D. Litim

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我们研究了具有矢量轻子和美味标量扇区的标准模型扩展的对撞机特征。这样的框架自然出现在渐近安全模型构建中,它将标准模型的紫外线行为驯服到普朗克尺度及以上。我们重点关注汤川耦合和质量的值,它们可以解释有关μ子和电子反常磁矩的现有数据。使用基于 77.4fb-1documentclass[12pt]{minimal} usepackage{amsmath} usepackage{wasysym} usepackage{amsfonts} usepackage{amssymb} usepackage{amsbsy} usepackage{mathrsfs} usepackage{upgreek} setlength{oddsidemargin}{-69pt} egin{document}$$77.4 , ext 的 CMS 搜索{fb}^{-1}$$end{document} 位于 s=13documentclass[12pt]{minimal} usepackage{amsmath} usepackage{wasysym} usepackage{amsfonts} usepackage{amssymb} usepackage{amsbsy} usepackage{mathrsfs} usepackage{upgreek} setlength{oddsidemargin}{-69pt} egin{document}$$sqrt{s}=13$$end{document} TeV LHC 我们发现,如果质量低于 300 GeV 的类矢量轻子是 SU(2)Ldocumentclass[12pt]{minimal} usepackage{amsmath} usepackage{wasysym} usepackage{amsfonts} usepackage{amssymb} usepackage{amsbsy} 下的单峰,则它们被排除在外usepackage{mathrsfs} usepackage{upgreek} setlength{oddsidemargin}{-69pt} egin{document}$$SU(2)_L$$end{document},如果它们是双峰,则约为 800 GeV。利用标量的风味破坏式衰减,我们设计了基于相反符号相反风味不变质量的新颖的零测试可观测量。这些多轻子分布允许发出新的物理信号,并在 LHC 和 HL-LHC 的近期搜索范围内提取质量层次结构。
We investigate collider signatures of standard model extensions featuring vector-like leptons and a flavorful scalar sector. Such a framework arises naturally within asymptotically safe model building, which tames the UV behavior of the standard model towards the Planck scale and beyond. We focus on values of Yukawa couplings and masses which allow to explain the present data on the muon and electron anomalous magnetic moments. Using a CMS search based on 77.4fb-1documentclass[12pt]{minimal} usepackage{amsmath} usepackage{wasysym} usepackage{amsfonts} usepackage{amssymb} usepackage{amsbsy} usepackage{mathrsfs} usepackage{upgreek} setlength{oddsidemargin}{-69pt} egin{document}$$77.4 , ext {fb}^{-1}$$end{document} at the s=13documentclass[12pt]{minimal} usepackage{amsmath} usepackage{wasysym} usepackage{amsfonts} usepackage{amssymb} usepackage{amsbsy} usepackage{mathrsfs} usepackage{upgreek} setlength{oddsidemargin}{-69pt} egin{document}$$sqrt{s}=13$$end{document} TeV LHC we find that flavorful vector-like leptons are excluded for masses below around 300 GeV if they are singlets under SU(2)Ldocumentclass[12pt]{minimal} usepackage{amsmath} usepackage{wasysym} usepackage{amsfonts} usepackage{amssymb} usepackage{amsbsy} usepackage{mathrsfs} usepackage{upgreek} setlength{oddsidemargin}{-69pt} egin{document}$$SU(2)_L$$end{document}, and around 800 GeV if they are doublets. Exploiting the flavor-violating-like decays of the scalars, we design novel null test observables based on opposite sign opposite flavor invariant masses. These multi-lepton distributions allow to signal new physics and to extract mass hierarchies in reach of near-future searches at the LHC and the HL-LHC.
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期刊: Physical Review D
影响因子: 5
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影响因子: 6.3
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DOI: 10.1140/epjc/s10052-017-4976-5
发表时间: 2017
期刊: The European Physical Journal C
影响因子: --
作者:
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通讯作者: Bond A