Determining Higgs self-couplings at LHC and e+e- linear colliders

by Margarete MUEHLLEITNER (Université Montpellier II)

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

TH Auditorium (CERN)

When Higgs bosons are discovered, the self-energy potential must be reconstructed in order to reveal the basic mechanism for the breaking of the electroweak symmetries. It will therefore be essential to measure the self-couplings of the Higgs particles, as predicted in the Standard Model or in supersymmetric extensions. The trilinear couplings can be probed in multiple Higgs production at hadron and high-energy e+e- linear colliders. The production of pairs of neutral Higgs bosons in all relevant channels of double Higgs-strahlung, associated multiple Higgs production and WW/ZZ fusion as well as gluon-gluon fusion to Higgs pairs has been analyzed. Complementing earlier studies, a coherent picture has been developed for testing the trilinear Higgs self-couplings at high-energy colliders.