ISR corrections to associated $HZ$ production at future Higgs factories

Abstract

We evaluate the QED corrections due to initial state radiation (ISR) to associated Higgs boson production in electron-positron ($e^{+}{e}^{-}$) annihilation at typical energies of interest for the measurement of the Higgs properties at future $e^{+}{e}^{-}$ colliders, such as CEPC and FCC-ee. We apply the QED Structure Function approach to the four-fermion production process $e^{+}{e}^{-}\to {\mu }^{+}{\mu }^{-}b\bar{b}$, including both signal and background contributions. We emphasize the relevance of the ISR corrections particularly near threshold and show that finite third order collinear contributions are mandatory to meet the expected experimental accuracy. We analyze in turn the rôle played by a full four-fermion calculation and beam energy spread in precision calculations for Higgs physics at future $e^{+}{e}^{-}$ colliders.

11 pages, 3 figures

References in corpus (5)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Experimental constraints on the coupling of the Higgs boson to electrons
• ISR effects for resonant Higgs production at future lepton colliders
• Report by the Committee on the Scientific Case of the ILC Operating at 250 GeV as a Higgs Factory

Cited by in corpus (4)

• On the evaluation of two-loop electroweak box diagrams for $e^{+}{e}^{-}\to HZ$ production
• Two-Loop Electroweak Corrections with Fermion Loops to $e^{+}{e}^{-}\to ZH$
• When The Standard Model Higgs Meets Its Lighter 95 GeV Twin
• Initial state radiation correction and its effect to data-taking scheme for ${\sigma }^{\mathrm{B}}(e^{+}{e}^{-}\to ZH)$ measurement