Mass Scale of New Physics in the Absence of the Higgs Boson

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  • 1 October 1999
Abstract
We consider a hypothetical scenario in which the Higgs boson is absent, and attempt to constrain the mass scale Lambda of the new physics that would take its place. Using recent measurements of sin^2(theta_eff^lept) and M_W, we show that, in a class of theories characterized by simple conditions, the upper bound on Lambda is close to or smaller than the SM upper bound on M_H, while in the complementary class Lambda is not restricted by our considerations. The issue of fine-tuning when Lambda is large is briefly discussed.

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