Lee-Quigg-Thacker Bounds for Higgs Boson Masses in a Two-Doublet Model

Abstract

Upper bounds for neutral as well as charged Higgs boson masses in a two-doublet model are obtained on the basis of tree unitarity conditions à la Lee, Quigg and Thacker. A wide variety of scattering processes are considered so extensively that our bounds are more restrictive than those obtained previously for neutral Higgs bosons and are also of a new kind for charged Higgs boson. It is argued that at least one of the Higgs bosons should be lighter than 580 $\mathrm{GeV}/c^2$.

15pages, 2 figures (not included but available upon request), OS-GE 32-93

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