Tuesday, August 6, 2013

1308.0891 (Radovan Dermisek et al.)

Coleman-Weinberg Higgs    [PDF]

Radovan Dermisek, Tae Hyun Jung, Hyung Do Kim
We discuss an extension of the standard model by fields not charged under standard model gauge symmetry in which the electroweak symmetry breaking is driven by the Higgs quartic coupling itself without the need for a negative mass term in the potential. This is achieved by a scalar field S with a large coupling to the Higgs field at the electroweak scale which is driven to very small values at high energies by the gauge coupling of a hidden symmetry under which S is charged. This model remains perturbative all the way to the Planck scale. The Higgs boson is fully SM-like in its couplings to fermions and gauge bosons. The only modified couplings are the effective cubic and quartic self-couplings of the Higgs boson, which are enhanced by 67% and 267% respectively.
View original: http://arxiv.org/abs/1308.0891

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