Electroweak scale invariant models with small cosmological constant

被引：16

作者：

Foot, Robert ^{[1
]}

Kobakhidze, Archil ^{[1
,2
]}

机构：

[1] Univ Melbourne, Sch Phys, ARC Ctr Excellence Particle Phys Terascale, Melbourne, Vic 3010, Australia

[2] Univ Sydney, Sch Phys, ARC Ctr Excellence Particle Phys Terascale, Sydney, NSW 2006, Australia

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS A | 2015年 / 30卷 / 21期

基金：

澳大利亚研究理事会; 美国国家科学基金会;

关键词：

Scale invariance; Higgs physics; cosmological constant; DARK-MATTER; SYMMETRY-BREAKING;

D O I：

10.1142/S0217751X15501262

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

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. These models predict a light pseudo-Goldstone boson, h, with mass around 10 GeV or less. A fermionic-bosonic mass relation is also predicted. The specific models considered, as well as more generic scale invariant models, can be probed at the LHC.

引用

页数：12

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