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Each of the arguments for an upper limit on the Standard Model Higgs
mass presented above have small problems mainly lying in the fact that
they predict the breakdown of perturbation theory thus
predicting a strongly interacting high energy sector of vector boson
interactions. The whole concept of the Higgs mechanism as a
pertubative expansion around the vacuum expectation value also breaks
down.
Lattice theory should in principle be able to avoid this limitation
but so far calculations have only been made with a simplified model
with the heavy quarks excluded. However, it seems clear that the
standard model can not survive without modifications if the Higgs mass
is above 1 TeV. Quite small corrections to the standard model can
allow higher Higgs masses so a limit at 1 TeV should in no way limit
the search at the LHC for Higgs like objects with even higher masses.
Ulrik Egede
1/8/1998