  Electroweak radiative corrections with double-log enhancements occur in
inclusive observables at the TeV scale because of a lack of compensation of
virtual corrections with real emission due to the nonabelian (weak isospin)
charges of the accelerator beams. Here we evaluate such Bloch-Nordsieck
violating corrections in the case of initial longitudinal bosons, which is
experimentally provided by boson fusion processes, and is related to the
Goldstone-Higgs sector. All four states of this sector are involved in the
group structure of the corrections, and cause in particular a novel double log
effect due to hypercharge mixing in the longitudinal states. We study both the
light- and the heavy-Higgs cases, and we analyze the symmetry breaking pattern
of the corrections. The latter turn out to be pretty large, in the 5-10 %
range, and show an interesting Higgs mass dependence, even for processes
without Higgs boson in the final state.
