Abstract
The bremsstrahlung off b quarks may be the only realistic production process for neutral Higgs bosons with enhanced couplings to the down quarks (present in several interesting theoretical scenarios). We calculate those production cross sections for ep collisions at HERA and LEP/LHC energies. Although typically smaller than the analogous cross sections for e + e − collisions at LEP, for certain important ranges of the parameter space ( M H , g b bH ) they may be of experimental interest, even at HERA, provided good identification about b quarks is achieved.
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