Monday, March 5, 2012

1203.0237 (Joan Elias-Miró et al.)

Stabilization of the Electroweak Vacuum by a Scalar Threshold Effect    [PDF]

Joan Elias-Miró, José, R. Espinosa, Gian F. Giudice, Hyun Min Lee, Alessandro Strumia
We show how a heavy scalar singlet with a large vacuum expectation value can evade the potential instability of the Standard Model electroweak vacuum. The quartic interaction between the heavy scalar singlet and the Higgs doublet leads to a positive tree-level threshold correction for the Higgs quartic coupling, which is very effective in stabilizing the potential. We provide examples, such as the see-saw, invisible axion and unitarized Higgs inflation, where the proposed mechanism is automatically implemented in well-defined ranges of Higgs masses.
View original: http://arxiv.org/abs/1203.0237

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