Diphoton plus $Z$ production at the ILC at $\mathcal{O}({\alpha }^4)$

Abstract

Precision measurement for the production of a $Z$-boson in association with two photons is important for investigating the Higgs boson and exploring new physics at the International Linear Collider. It could be used to study the $ZZ\gamma \gamma$ anomalous quartic gauge coupling. In this work we report on our calculation of the full $\mathcal{O}({\alpha }^4)$ contributions to the $e^{+}{e}^{-}\to Z\gamma \gamma$ process in the standard model, and we analyze the electroweak (EW) quantum effects on the total cross section. We investigate the dependence of the $Z\gamma \gamma$ production rate on the event selection scheme and provide distributions for some important kinematic observables. We find that the next-to-leading order (NLO) EW corrections can enhance the total cross section quantitatively from $2.32\%$ to $9.61\%$ when the colliding energy goes up from $250GeV$ to $1TeV$, and the NLO EW corrections show obviously a non trivial phase space dependence. We conclude that in studying the signal process $e^{+}{e}^{-}\to ZH\to Z\gamma \gamma$, the background process $e^{+}{e}^{-}\to Z\gamma \gamma$ can be suppressed significantly if we take appropriate kinematic cuts on the final products.

18 pages, 10 figures

References in corpus (8)

• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• NLO QCD corrections to tri-boson production
• QCD corrections to tri-boson production
• QCD corrections to hadronic WWZ production with leptonic decays
• QCD corrections to charged triple vector boson production with leptonic decay
• Wγγproduction with leptonic decays at NLO QCD
• NLO QCD corrections to $W^{\pm }Z\gamma$ production with leptonic decays
• Complete one-loop electroweak corrections to $ZZZ$ production at the ILC

Cited by in corpus (5)

• Electroweak corrections to top quark pair production in association with a hard photon at hadron colliders
• Electroweak radiative corrections to $W^{+}{W}^{-}\gamma$ production at the ILC
• Electroweak radiative corrections to triple photon production at the ILC
• Precision study on $ZZ\gamma$ production including $Z$-boson leptonic decays at the ILC
• Interference effects on Higgs mass measurement in $e^{+}{e}^{-}\to H(\gamma \gamma )Z$ at CEPC