Interference effects on Higgs mass measurement in e+e-→H(γγ)Z at CEPC

  • A high luminosity Circular Electron Positron Collider (CEPC) as a Higgs Factory will be helpful for precision measurements of the Higgs mass. The signal-background interference effect is carefully studied for the Higgs diphoton decay mode in associated Z boson production at future e+e- colliders at energy 246 GeV. The mass shifts go up from about 20 MeV to 50 MeV for the experimental mass resolution ranging from 0.8 GeV to 2 GeV.
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Guang-Zhi Xu, Gang Li, Yi-Jie Li, Kui-Yong Liu and Yu-Jie Zhang. Interference effects on Higgs mass measurement in e+e-→H(γγ)Z at CEPC[J]. Chinese Physics C, 2016, 40(3): 033101. doi: 10.1088/1674-1137/40/3/033101
Guang-Zhi Xu, Gang Li, Yi-Jie Li, Kui-Yong Liu and Yu-Jie Zhang. Interference effects on Higgs mass measurement in e+e-→H(γγ)Z at CEPC[J]. Chinese Physics C, 2016, 40(3): 033101.  doi: 10.1088/1674-1137/40/3/033101 shu
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Received: 2015-05-25
Revised: 2015-10-26
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    Supported by National Natural Science Foundation of China (11375021, 11447018), New Century Excellent Talents in University (NCET) (NCET-13-0030), Major State Basic Research Development Program of China (2015CB856701), Fundamental Research Funds for Central Universities, and Education Ministry of LiaoNing Province.

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Interference effects on Higgs mass measurement in e+e-→H(γγ)Z at CEPC

    Corresponding author: Guang-Zhi Xu,
  • 1.  Key Laboratory of Micro-nano Measurement-Manipulation and Physics (Ministry of Education) andSchool of Physics, Beihang University, Beijing 100191, China
  • 2.  Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
  • 3.  Department of Physics, Liaoning University, Shenyang 110036, China
  • 4. Key Laboratory of Micro-nano Measurement-Manipulation and Physics (Ministry of Education) andSchool of Physics, Beihang University, Beijing 100191, China
  • 5. CAS Center for Excellence in Particle Physics, Beijing 100049, China
Fund Project:  Supported by National Natural Science Foundation of China (11375021, 11447018), New Century Excellent Talents in University (NCET) (NCET-13-0030), Major State Basic Research Development Program of China (2015CB856701), Fundamental Research Funds for Central Universities, and Education Ministry of LiaoNing Province.

Abstract: A high luminosity Circular Electron Positron Collider (CEPC) as a Higgs Factory will be helpful for precision measurements of the Higgs mass. The signal-background interference effect is carefully studied for the Higgs diphoton decay mode in associated Z boson production at future e+e- colliders at energy 246 GeV. The mass shifts go up from about 20 MeV to 50 MeV for the experimental mass resolution ranging from 0.8 GeV to 2 GeV.

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