Testing the Higgs system at a photon-photon collider

Oct, 1993
41 pages
Published in:
  • Z.Phys.C 62 (1994) 235-252
e-Print:
Report number:
  • SACLAY-SPH-T-93-111

Citations per year

19871993199920052011012345
Abstract: (cern)
The level of sensitivity of the processes γγZZ\gamma\gamma \to ZZ, γγW +W \gamma\gamma \to W~+W~- and γγttˉ\gamma\gamma \to t\bar t to the Higgs sector of the Standard Model Lagrangian in the energy region between 200 GeV and 1 TeV is examined. The elementary Higgs boson is taken to have a mass less than 1 TeV. Sizeable effects are found in the ZZZZ and ttˉt\bar t channels if the incoming photons have the same helicity. Also the possibility that the elementary Higgs boson does not exist is examined. Assuming new physics to show up in the TeV energy region the cross sections are evaluated according to the heavy Higgs model. For center of mass energy values close to 1 TeV interesting effects are found in the ttˉt\bar t channel if the photons have the same helicity. The limit of large Higgs mass is not unique. The parametrization of this arbitrariness may be interpreted as a representation of the new physics. The effects for the processes γγZZ\gamma\gamma\to ZZ and γγttˉ\gamma\gamma\to t\bar t are investigated. These effects may be correlated to a possible resonance in WWWW scattering in the TeV region.
  • photon photon: interaction
  • interaction: photon photon
  • intermediate boson: pair production
  • pair production: intermediate boson
  • intermediate boson: photoproduction
  • photoproduction: intermediate boson
  • top: pair production
  • pair production: top
  • kinematics
  • Higgs model: validity test