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arXiv · 1505.06981

Interference effects on Higgs mass measurement in $e^+e^-\to H(γγ) Z$ at CEPC

Guang-Zhi Xu·Gang Li·Yi-Jie Li·Kui-Yong Liu·Yu-Jie Zhang
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Abstract

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

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Guang-Zhi Xu, Gang Li, Yi-Jie Li, Kui-Yong Liu, Yu-Jie Zhang. 2015-05-23. Interference effects on Higgs mass measurement in $e^+e^-\to H(γγ) Z$ at CEPC. https://doi.org/10.1088/1674-1137%2F40%2F3%2F033101

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