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Chinese Physics C> 2017, Vol. 41> Issue(2) : 023105 DOI: 10.1088/1674-1137/41/2/023105

Discovery potential of Higgs boson pair production through 4l+E final states at a 100 TeV collider

  • 1.

      Centre for Cosmology, Particle Physics and Phenomenology(CP3), Université

  • 2.

      Department of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University Beijing 100871, China

  • 3.

      Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

  • 4.

     School of Physics Sciences, University of Chinese Academy of Sciences, Beijing 100049, China

  • 5.

     Center for Future High Energy Physics, CAS, Beijing 100049, China

  • We explore the discovery potential of Higgs pair production at a 100 TeV collider via full leptonic mode. The same mode can be explored at the LHC when Higgs pair production is enhanced by new physics. We examine two types of fully leptonic final states and propose a partial reconstruction method, which can reconstruct some useful kinematic observables. It is found that the mT2 variable determined by this reconstruction method and the reconstructed visible Higgs mass are crucial to discriminate the signal and background events. It is also noticed that a new variable, denoted as Δm, which is defined as the mass difference of two possible combinations, is very useful as a discriminant. To examine the detector effects, we consider seven detector setups for a 100 TeV collider and investigate the changes in the sensitivity, and we find that lepton isolation and the minimal lepton Pt cut are crucial in order to reduce the integrated luminosity.
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Xiaoran Zhao, Qiang Li, Zhao Li and Qi-Shu Yan. Discovery potential of Higgs boson pair production through 4l+E final states at a 100 TeV collider[J]. Chinese Physics C, 2017, 41(2): 023105. doi: 10.1088/1674-1137/41/2/023105
Xiaoran Zhao, Qiang Li, Zhao Li and Qi-Shu Yan. Discovery potential of Higgs boson pair production through 4l+E final states at a 100 TeV collider[J]. Chinese Physics C, 2017, 41(2): 023105.  doi: 10.1088/1674-1137/41/2/023105 shu
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Received: 2016-09-03
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    Supported by Natural Science Foundation of China (11175251, 11305179, 11675185, 11475180, 11575005) The work of Q. Li and Q.S. Yan is partially supported by CAS Center for Excellence in Particle Physics (CCEPP), X. Zhao is partially supported by the European Union as part of the FP7 Marie Curie Initial Training Network MCnetITN (PITN-GA-2012-315877).

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Discovery potential of Higgs boson pair production through 4l+E final states at a 100 TeV collider

    Corresponding author: Xiaoran Zhao,
    Corresponding author: Qiang Li,
    Corresponding author: Zhao Li,
    Corresponding author: Qi-Shu Yan,
  • 1.  Centre for Cosmology, Particle Physics and Phenomenology(CP3), Université
  • 2.  Department of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University Beijing 100871, China
  • 3.  Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
  • 4. School of Physics Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
  • 5. Center for Future High Energy Physics, CAS, Beijing 100049, China
  • Received Date: 2016-09-03
  • Available Online: 2017-02-05
Fund Project:  Supported by Natural Science Foundation of China (11175251, 11305179, 11675185, 11475180, 11575005) The work of Q. Li and Q.S. Yan is partially supported by CAS Center for Excellence in Particle Physics (CCEPP), X. Zhao is partially supported by the European Union as part of the FP7 Marie Curie Initial Training Network MCnetITN (PITN-GA-2012-315877).

Abstract: We explore the discovery potential of Higgs pair production at a 100 TeV collider via full leptonic mode. The same mode can be explored at the LHC when Higgs pair production is enhanced by new physics. We examine two types of fully leptonic final states and propose a partial reconstruction method, which can reconstruct some useful kinematic observables. It is found that the mT2 variable determined by this reconstruction method and the reconstructed visible Higgs mass are crucial to discriminate the signal and background events. It is also noticed that a new variable, denoted as Δm, which is defined as the mass difference of two possible combinations, is very useful as a discriminant. To examine the detector effects, we consider seven detector setups for a 100 TeV collider and investigate the changes in the sensitivity, and we find that lepton isolation and the minimal lepton Pt cut are crucial in order to reduce the integrated luminosity.

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