Probing HZZ at FCC-ee


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Kahraman I., Çakır O.

8th FCC Physics Workshop, Geneve, Switzerland, 13 - 17 January 2025, pp.1

  • Publication Type: Conference Paper / Summary Text
  • City: Geneve
  • Country: Switzerland
  • Page Numbers: pp.1
  • Ankara University Affiliated: Yes

Abstract

The future circular e+e- collider (FCC-ee) would allow the Higgs scalar sector to be probed with high precision beyond that achievable at the LHC. Focus of the Higgs searches at the e+e- collider would be model independent determination of the Higgs couplings to gauge bosons and fermions. The measurement of single Higgs boson production cross section, using recoil mass or invariant mass methods, set the scale for Higgs coupling measurements. The studies have considered mostly the process e+e- > HZ (where Z decays into two opposite charge sign leptons) for the recoil mass method applied. However, in other studies it is shown the hadronic decays of the Z boson improves the sensitivity due to larger branching ratio. In this work, both the leptonic and hadronic final states considered to enhance the sensitivity. The results are compared at two center of mass energies 240 GeV and 365 GeV of the FCC-ee.