Higgs vacuum stability from the dark matter portal
| Autor: | Christopher McCabe, Gunnar Ro, Valentin V. Khoze |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Physics
Nuclear and High Energy Physics Gauge boson Particle physics Large Hadron Collider Electroweak interaction Dark matter Scalar (mathematics) High Energy Physics::Phenomenology FOS: Physical sciences Higgs physics Parameter space Standard Model High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph) Cosmology of theories beyond the SM Beyond Standard Model Higgs boson |
| Zdroj: | Journal of high energy physics, 2014, Vol.2014(8), pp.26 [Peer Reviewed Journal] Khoze, V, McCabe, C & Ro, G 2014, ' Higgs vacuum stability from the dark matter portal ', Journal of High Energy Physics, vol. 2014, no. 8, 26, pp. 1-33 . https://doi.org/10.1007/JHEP08(2014)026 Journal of High Energy Physics |
| DOI: | 10.1007/JHEP08(2014)026 |
| Popis: | We consider classically scale-invariant extensions of the Standard Model (CSI ESM) which stabilise the Higgs potential and have good dark matter candidates. In this framework all mass scales, including electroweak and dark matter masses, are generated dynamically and have a common origin. We consider Abelian and non-Abelian hidden sectors portally coupled to the SM with and without a real singlet scalar. We perform a careful analysis of RG running to determine regions in the parameter space where the SM Higgs vacuum is stabilised. After combining this with the LHC Higgs constraints, in models without a singlet, none of the regained parameter space in Abelian ESMs, and only a small section in the non-Abelian ESM survives. However, in all singlet-extended models we find that the Higgs vacuum can be stabilised in all of the parameter space consistent with the LHC constraints. These models naturally contain two dark matter candidates: the real singlet and the dark gauge boson in non-Abelian models. We determine the viable range of parameters in the CSI ESM framework by computing the relic abundance, imposing direct detection constraints and combining with the LHC Higgs constraints. In addition to being instrumental in Higgs stabilisation, we find that the singlet component is required to explain the observed dark matter density. 33 pages, 11 figures v2: typos corrected |
| Databáze: | OpenAIRE |
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