Strongly interacting W bosons at future colliders

by Wolfgang KILIAN (University of Karlsruhe)

Friday 2 Mar 2001, 14:00 → 15:00 Europe/Zurich

TH Auditorium (CERN)

While the electroweak precision data in the context of the Minimal Standard Model prefer a light Higgs boson, they do not exclude alternative scenarios where the Higgs resonance is heavy or absent. If no Higgs-like resonance exists in the scattering amplitudes of electroweak gauge bosons below the TeV scale, they become strongly interacting at higher energies. Below the strong-interaction threshold the behaviour of scattering amplitudes can be parameterized in a model-independent way. Future colliders (LHC / lepton colliders) have a complementary potential to investigate this scenario. New tools that treat six-fermion final states exactly allow for a detailed simulation that has been performed first for the TESLA environment.