The Higgs Mass Bound in Gauge Extensions of the Minimal Supersymmetric Standard Model

Details The Higgs Mass Bound in Gauge Extensions of the Minimal Supersymmetric Standard Model The Higgs Mass Bound in Gauge Extensions of the Minimal Supersymmetric Standard Model

2003-09-15

arxiv.org/abs/hep-ph/0309149v3

JHEP 0402:043,2004

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, JHEP3, clarifications added in sections 2 and conclusions, version to be published in JHEP

Scientific paper

10.1088/1126-6708/2004/02/043

The minimal supersymmetric standard model, and extensions, have stringent upper bounds on the mass of the lightest Higgs boson if perturbativity up to the Planck scale is assumed. We argue that these bounds are softened tremendously if the Higgs is charged under an asymptotically free gauge group. We present a model with an additional SU(2) gauge group which easily produces Higgs masses above 200 GeV while avoiding electroweak constraints. If one allows some fine-tuning of the high-scale value of the gauge coupling, Higgs masses greater than 350 GeV are achieved. Unification of couplings is predicted to similar accuracy as in the minimal supersymmetric standard model with only small deviations at the two-loop level.

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