Reopening the Higgs portal for single scalar dark matter
Abstract A real singlet scalar, connected to the Standard Model sector through a portal with the Higgs boson, is one of the simplest and most popular models for dark matter (DM). However, the experimental advances in direct and indirect DM searches, together with the latest results from the LHC, hav...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2017-05-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1007/JHEP05(2017)036 |
| _version_ | 1818177758706008064 |
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| author | J.A. Casas D.G. Cerdeño J.M. Moreno J. Quilis |
| author_facet | J.A. Casas D.G. Cerdeño J.M. Moreno J. Quilis |
| author_sort | J.A. Casas |
| collection | DOAJ |
| description | Abstract A real singlet scalar, connected to the Standard Model sector through a portal with the Higgs boson, is one of the simplest and most popular models for dark matter (DM). However, the experimental advances in direct and indirect DM searches, together with the latest results from the LHC, have ruled out vast areas of the parameter space of this scenario; and are expected to probe it completely within the next years, ruling it out if no signal is found. Motivated by the simplicity of this model, in this article we address a minimal, renormalizable extension that could evade detection, consisting of the addition of an extra real singlet scalar field in the dark sector. We analyze the physical constraints on the model and show that the new annihilation and/or coannihilation channels involving the extra singlet allow to reproduce the correct DM relic abundance while avoiding the bounds from direct and indirect searches for any DM mass above 50 GeV. We also show that, in some interesting regions of the parameter space, the extra particle can be integrated-out, leaving a “clever” effective theory (just involving the DM particle and the Higgs), that essentially reproduces the results. |
| first_indexed | 2024-12-11T20:37:11Z |
| format | Article |
| id | doaj.art-d8369ae3b837463b9cfbccff427617a5 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-11T20:37:11Z |
| publishDate | 2017-05-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-d8369ae3b837463b9cfbccff427617a52022-12-22T00:51:38ZengSpringerOpenJournal of High Energy Physics1029-84792017-05-012017512610.1007/JHEP05(2017)036Reopening the Higgs portal for single scalar dark matterJ.A. Casas0D.G. Cerdeño1J.M. Moreno2J. Quilis3Instituto de Física Teórica UAM/CSIC, Universidad Autónoma de MadridInstituto de Física Teórica UAM/CSIC, Universidad Autónoma de MadridInstituto de Física Teórica UAM/CSIC, Universidad Autónoma de MadridInstituto de Física Teórica UAM/CSIC, Universidad Autónoma de MadridAbstract A real singlet scalar, connected to the Standard Model sector through a portal with the Higgs boson, is one of the simplest and most popular models for dark matter (DM). However, the experimental advances in direct and indirect DM searches, together with the latest results from the LHC, have ruled out vast areas of the parameter space of this scenario; and are expected to probe it completely within the next years, ruling it out if no signal is found. Motivated by the simplicity of this model, in this article we address a minimal, renormalizable extension that could evade detection, consisting of the addition of an extra real singlet scalar field in the dark sector. We analyze the physical constraints on the model and show that the new annihilation and/or coannihilation channels involving the extra singlet allow to reproduce the correct DM relic abundance while avoiding the bounds from direct and indirect searches for any DM mass above 50 GeV. We also show that, in some interesting regions of the parameter space, the extra particle can be integrated-out, leaving a “clever” effective theory (just involving the DM particle and the Higgs), that essentially reproduces the results.http://link.springer.com/article/10.1007/JHEP05(2017)036Beyond Standard ModelCosmology of Theories beyond the SM |
| spellingShingle | J.A. Casas D.G. Cerdeño J.M. Moreno J. Quilis Reopening the Higgs portal for single scalar dark matter Journal of High Energy Physics Beyond Standard Model Cosmology of Theories beyond the SM |
| title | Reopening the Higgs portal for single scalar dark matter |
| title_full | Reopening the Higgs portal for single scalar dark matter |
| title_fullStr | Reopening the Higgs portal for single scalar dark matter |
| title_full_unstemmed | Reopening the Higgs portal for single scalar dark matter |
| title_short | Reopening the Higgs portal for single scalar dark matter |
| title_sort | reopening the higgs portal for single scalar dark matter |
| topic | Beyond Standard Model Cosmology of Theories beyond the SM |
| url | http://link.springer.com/article/10.1007/JHEP05(2017)036 |
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