Complex scalar singlet dark matter: Vacuum stability and phenomenology
By M. Gonderinger, H. Lim, M. Ramsey-Musolf. 2012
187 citations recorded by the source corpus.
We analyze one-loop vacuum stability, perturbativity, and phenomenological constraints on a complex singlet extension of the standard model scalar sector containing a scalar dark matter candidate. We study vacuum stability considerations using a gauge-invariant approach and compare with the conventional gauge-dependent procedure. We show that, if new physics exists at the TeV scale, the vacuum stability analysis and experimental constraints from the dark matter sector, electroweak precision data, and LEP allow both a Higgs-like scalar in the mass range allowed by the latest results from CMS and ATLAS and a lighter singlet-like scalar with weak couplings to standard model particles. If instead no new physics appears until higher energy scales, there may be significant tension between the vacuum stability analysis and phenomenological constraints (in particular electroweak precision data) to the extent that the complex singlet extension with light Higgs and singlet masses would be ruled out. We comment on the possible implications of a scalar with ∼125 GeV mass and future ATLAS invisible decay searches.
Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/d057aa60d8f801fd231b98faa9ba13cc9fc1df48
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In Astronomy and Astrophysics
In Nuclear and High Energy Physics
- Cms Collaboration
- Gudrun Heinrich
- G. Panico
- A. Wulzer
- Atlas Collaboration
- Andrea Tesi
- A. Falkowski
- Igor P. Ivanov
Citations in the corpus
- A second Higgs from the Higgs portal (2015, methodology): “Here we study what constraints are imposed on the parameter space if we require the couplings to remain perturbative and the electroweak vacuum to be stable all the way up to the Planck scale (see also [25, 26]).”
- Physics at a 100 TeV pp collider: Higgs and EW symmetry breaking studies (2016, background): “An special case occurs when φ is a complex singlet [290,320,356].”
- Building and testing models with extended Higgs sectors (2017, background): “There have been several extensive analyses of the DM properties in complex singlet extensions [352, 429, 430]; for more details see the overview [349].”
- Higgs portal, fermionic dark matter, and a Standard Model like Higgs at 125 GeV (2012, background): “An interesting possibility is that the coupling of dark and visible sectors is through a Higgs portal [1–18].”