Abstract
We have studied the Higgs-boson production in e+e− collisions in the √s=(0.1÷4) TeV region. In particular, the bremsstrahlung process associated with heavy quarks has been investigated in detail, comparing with the typical process $$e^ + e^ - \to \nu _e \bar \nu _e $$ H0 at very high energy. It is found that the bremsstrahlung process is negligibly small if the top-quark mass is about 40 GeV and the further heavy quarks do not exist, but not negligible if the superheavy quarks exist in the TeV energy region.
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