Raising the Higgs mass with Yukawa couplings for isotriplets in vector-like extensions of minimal supersymmetry

Details Raising the Higgs mass with Yukawa couplings for isotriplets in vector-like extensions of minimal supersymmetry Raising the Higgs mass with Yukawa couplings for isotriplets in vector-like extensions of minimal supersymmetry

2010-06-21

arxiv.org/abs/1006.4186v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

30 pages

Scientific paper

Extra vector-like matter with both electroweak-singlet masses and large Yukawa couplings can significantly raise the lightest Higgs boson mass in supersymmetry through radiative corrections. I consider models of this type that involve a large Yukawa coupling between weak isotriplet and isodoublet chiral supermultiplets. The particle content can be completed to provide perturbative gauge coupling unification, in several different ways. The impact on precision electroweak observables is shown to be acceptably small, even if the new particles are as light as the current experimental bounds of order 100 GeV. I study the corrections to the lightest Higgs boson mass, and discuss the general features of the collider signatures for the new fermions in these models.

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