No-Lose Theorem for Higgs Boson Searches at a Future Linear Collider

Abstract
Assuming perturbativity up to a high energy scale 1016GeV, we demonstrate that a future e+e linear collider operating at s=500GeV with L=500fb1 per year (such as the recently proposed TESLA facility) will detect a Higgs boson signal regardless of the complexity of the Higgs sector and of how the Higgs bosons decay.
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