Limits on a heavy Higgs sector

Abstract

Using the classical argument about tree level unitarity breakdown in combination with the precision electroweak data, it is shown, that if part of the Higgs sector is heavy and strongly interacting, this part is small and is out of range of the LHC. The limits take into account the recent Higgs search results at the LHC.

Comments: For M. Veltman's 80th birthday 6 pages, 1 table