Measurement of H μ+ μ- production in association with a Z boson at the CEPC
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-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 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-μ-μ coupling can be measured within 10\% accuracy.
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