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arXiv · 1210.2848

TeV Scale B-L model with a flat Higgs potential at the Planck scale -- in view of the hierarchy problem

Satoshi Iso·Yuta Orikasa
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Abstract

The recent discovery of the Higgs-like particle at around 126 GeV has given us a big hint towards the origin of the Higgs potential. Especially the running quartic coupling vanishes near the Planck scale, which indicates a possible link between the physics in the electroweak and the Planck scales. Motivated by this and the hierarchy problem, we investigate a possibility that the Higgs has a flat potential at the Planck scale. In particular, we study the RG analysis of the B-L extension of the standard model with a classical conformality. The B-L symmetry is radiatively broken at the TeV scale via the Coleman-Weinberg mechanism. The electroweak symmetry breaking is triggered by a radiatively generated scalar mixing so that its scale 246 GeV is dynamically related with the B-L breaking scale at TeV. The Higgs boson mass is given at the border of the stability bound,which is lowered by a few GeV from the SM by the effect of the B-L gauge interaction.

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Satoshi Iso, Yuta Orikasa. 2012-10-10. TeV Scale B-L model with a flat Higgs potential at the Planck scale -- in view of the hierarchy problem. https://doi.org/10.1093/ptep/pts099

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