Reopen parameter regions in two-Higgs doublet models

The stability of the electroweak potential is a very important constraint for models of new physics. At the moment, it is standard for Two-Higgs doublet models (THDM), singlet or triplet extensions of the standard model to perform these checks at tree-level. However, these models are often studied i...

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Main Author: Florian Staub
Format: Article
Language:English
Published: Elsevier 2018-01-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269317309577
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spelling doaj-578bcc7b4300449d81828772912defe72020-11-24T21:24:54ZengElsevierPhysics Letters B0370-26931873-24452018-01-01776C40741110.1016/j.physletb.2017.11.065Reopen parameter regions in two-Higgs doublet modelsFlorian Staub0Institute for Theoretical Physics (ITP), Karlsruhe Institute of Technology, Engesserstraße 7, D-76128 Karlsruhe, GermanyThe stability of the electroweak potential is a very important constraint for models of new physics. At the moment, it is standard for Two-Higgs doublet models (THDM), singlet or triplet extensions of the standard model to perform these checks at tree-level. However, these models are often studied in the presence of very large couplings. Therefore, it can be expected that radiative corrections to the potential are important. We study these effects at the example of the THDM type-II and find that loop corrections can revive more than 50% of the phenomenological viable points which are ruled out by the tree-level vacuum stability checks. Similar effects are expected for other extension of the standard model.http://www.sciencedirect.com/science/article/pii/S0370269317309577
collection DOAJ
language English
format Article
sources DOAJ
author Florian Staub
spellingShingle Florian Staub
Reopen parameter regions in two-Higgs doublet models
Physics Letters B
author_facet Florian Staub
author_sort Florian Staub
title Reopen parameter regions in two-Higgs doublet models
title_short Reopen parameter regions in two-Higgs doublet models
title_full Reopen parameter regions in two-Higgs doublet models
title_fullStr Reopen parameter regions in two-Higgs doublet models
title_full_unstemmed Reopen parameter regions in two-Higgs doublet models
title_sort reopen parameter regions in two-higgs doublet models
publisher Elsevier
series Physics Letters B
issn 0370-2693
1873-2445
publishDate 2018-01-01
description The stability of the electroweak potential is a very important constraint for models of new physics. At the moment, it is standard for Two-Higgs doublet models (THDM), singlet or triplet extensions of the standard model to perform these checks at tree-level. However, these models are often studied in the presence of very large couplings. Therefore, it can be expected that radiative corrections to the potential are important. We study these effects at the example of the THDM type-II and find that loop corrections can revive more than 50% of the phenomenological viable points which are ruled out by the tree-level vacuum stability checks. Similar effects are expected for other extension of the standard model.
url http://www.sciencedirect.com/science/article/pii/S0370269317309577
work_keys_str_mv AT florianstaub reopenparameterregionsintwohiggsdoubletmodels
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