Light Higgs bosons from a strongly interacting Higgs sector
Dipartimento di Fisica e Astronomia, Università di Catania
INFN, Sezione di Catania and INFM UdR di Catania
Corso Italia 57, I-95129 Catania, Italy
Accepted: 19 June 2002
The mass and the decay width of a Higgs boson in the minimal standard model are evaluated by a variational method in the limit of strong self-coupling interaction. The non-perturbative technique provides an interpolation scheme between strong-coupling regime and weak-coupling limit where the standard perturbative results are recovered. In the strong-coupling limit the physical mass and the decay width of the Higgs boson are found to be very small as a consequence of mass renormalization. Thus it is argued that the eventual detection of a light Higgs boson would not rule out the existence of a strongly interacting Higgs sector.
PACS: 14.80.Bn – Standard-model Higgs bosons / 11.15.Tk – Other nonperturbative techniques / 11.10.Gh – Renormalization
© EDP Sciences, 2002