Diminished Upper Bounds on the Unification Mass Scales for Heavy Higgs Boson Masses

Details Diminished Upper Bounds on the Unification Mass Scales for Heavy Higgs Boson Masses Diminished Upper Bounds on the Unification Mass Scales for Heavy Higgs Boson Masses

2005-12-06

arxiv.org/abs/hep-th/0512069v1

Mod.Phys.Lett. A21 (2006) 209-212

Physics

High Energy Physics

High Energy Physics - Theory

Scientific paper

10.1142/S0217732306019621

We consider dominant 3-, 4-, and 5-loop contributions to $\lambda$, the quartic scalar coupling-constant's $\beta$-function in the Standard Model. We find that these terms accelerate the evolution of $\lambda$ to nonperturbative values, thereby lowering the unification bound for which scalar-couplings are still perturbative. We also find that these higher order contributions imply a substantial lowering of $\lambda$ itself before the anticipated onset of nonperturbative physics in the Higgs sector.

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