Electroweak scale invariant models with small cosmological constant
Robert Foot, Archil Kobakhidze
INTERNATIONAL JOURNAL OF MODERN PHYSICS A | WORLD SCIENTIFIC PUBL CO PTE LTD | Published : 2015
We consider scale invariant models where the classical scale invariance is broken perturbatively by radiative corrections at the electroweak scale. These models potentially offer an elegant and simple solution to the hierarchy problem. If we further require the cosmological constant to be small then such models are also highly predictive. Indeed, the minimal such model, comprizing a Higgs doublet and a real singlet, has the same number of parameters as the standard model. Although this minimal model is disfavored by recent LHC data, we show that two specific extensions incorporating neutrino masses and dark matter are fully realistic. That is, consistent with all experiments and observations..View full abstract
Awarded by Rustaveli National Science Foundation
We would like to thank Ray Volkas for collaboration during the early stage of this work. The work was supported in part by the Australian Research Council. A. Kobakhidze was also supported in part by the Rustaveli National Science Foundation under the projects No. DI/8/6-100/12 and No. DI/12/6-200/13.