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arXiv · 1711.06807

Measurement of $\mathrm{H} \to μ^+ μ^-$ production in association with a Z boson at the CEPC

Zhenwei Cui·Qiang Li·Gang Li·Manqi Ruan·Lei Wang·Daneng Yang
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Abstract

The Circular Electron-Positron Collider (CEPC) is a future Higgs factory proposed by the Chinese high energy physics community. It will operate at a center-of-mass energy of 240-250 GeV and is expected to accumulate an integrated luminosity of 5 ab$^{\rm{-1}}$ with ten years of operation. At CEPC, Higgs bosons are dominantly produced from $ZH$ associated process. Vast amount of Higgs events collected will enable precise studies of its properties including Yukawa couplings to massive particles. With {\sc GEANT4}-based simulation of detector effects, we study CEPC feasibility on measuring Higgs boson decaying into a pair of muons. The results with or without information from Z boson decay products are provided, which show a signal significance of over 10 standard deviations can be achieved and the H-$\mathrmμ$-$\mathrmμ$ coupling can be measured within $10\%$ accuracy.

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Zhenwei Cui, Qiang Li, Gang Li, Manqi Ruan, Lei Wang, Daneng Yang. 2017-12-06. Measurement of $\mathrm{H} \to μ^+ μ^-$ production in association with a Z boson at the CEPC. https://doi.org/10.1088/1674-1137%2F42%2F5%2F053001

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