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 246GeV. The mass shifts go up from about 20MeV to 50MeV for the experimental mass resolution ranging from 0.8GeV to 2GeV.
@article{arxiv.1505.06981,
title = {Interference effects on Higgs mass measurement in $e^+e^-\to H(\gamma\gamma) Z$ at CEPC},
author = {Guang-Zhi Xu and Gang Li and Yi-Jie Li and Kui-Yong Liu and Yu-Jie Zhang},
journal= {arXiv preprint arXiv:1505.06981},
year = {2016}
}