Implications of LHC searches for Higgs--portal dark matter

The search for the a Standard Model Higgs boson at the LHC is reaching a critical stage as the possible mass range for the particle has become extremely narrow and some signal at a mass of about 125 GeV is starting to emerge. We study the implications of these LHC Higgs searches for Higgs portal mod...

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Detalles Bibliográficos
Autores principales: Djouadi, Abdelhak, Lebedev, Oleg, Mambrini, Yann, Quevillon, Jeremie
Lenguaje:eng
Publicado: 2011
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/j.physletb.2012.01.062
http://cds.cern.ch/record/1407459
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author Djouadi, Abdelhak
Lebedev, Oleg
Mambrini, Yann
Quevillon, Jeremie
author_facet Djouadi, Abdelhak
Lebedev, Oleg
Mambrini, Yann
Quevillon, Jeremie
author_sort Djouadi, Abdelhak
collection CERN
description The search for the a Standard Model Higgs boson at the LHC is reaching a critical stage as the possible mass range for the particle has become extremely narrow and some signal at a mass of about 125 GeV is starting to emerge. We study the implications of these LHC Higgs searches for Higgs portal models of dark matter in a rather model independent way. Their impact on the cosmological relic density and on the direct detection rates are studied in the context of generic scalar, vector and fermionic thermal dark matter particles. Assuming a sufficiently small invisible Higgs decay branching ratio, we find that current data, in particular from the XENON experiment, essentially exclude fermionic dark matter as well as light, i.e. with masses below 50 GeV, scalar and vector dark matter particles. Possible observation of these particles at the planned upgrade of the XENON experiment as well in collider searches is discussed.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2011
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spelling cern-14074592021-10-06T14:00:13Zdoi:10.1016/j.physletb.2012.01.062http://cds.cern.ch/record/1407459engDjouadi, AbdelhakLebedev, OlegMambrini, YannQuevillon, JeremieImplications of LHC searches for Higgs--portal dark matterParticle Physics - PhenomenologyThe search for the a Standard Model Higgs boson at the LHC is reaching a critical stage as the possible mass range for the particle has become extremely narrow and some signal at a mass of about 125 GeV is starting to emerge. We study the implications of these LHC Higgs searches for Higgs portal models of dark matter in a rather model independent way. Their impact on the cosmological relic density and on the direct detection rates are studied in the context of generic scalar, vector and fermionic thermal dark matter particles. Assuming a sufficiently small invisible Higgs decay branching ratio, we find that current data, in particular from the XENON experiment, essentially exclude fermionic dark matter as well as light, i.e. with masses below 50 GeV, scalar and vector dark matter particles. Possible observation of these particles at the planned upgrade of the XENON experiment as well in collider searches is discussed.The search for the a Standard Model Higgs boson at the LHC is reaching a critical stage as the possible mass range for the particle has become extremely narrow and some signal at a mass of about 125 GeV is starting to emerge. We study the implications of these LHC Higgs searches for Higgs portal models of dark matter in a rather model independent way. Their impact on the cosmological relic density and on the direct detection rates are studied in the context of generic scalar, vector and fermionic thermal dark matter particles. Assuming a sufficiently small invisible Higgs decay branching ratio, we find that current data, in particular from the XENON experiment, essentially exclude fermionic dark matter as well as light, i.e. with masses below 50 GeV, scalar and vector dark matter particles. Possible observation of these particles at the planned upgrade of the XENON experiment as well in collider searches is discussed.The search for the a Standard Model Higgs boson at the LHC is reaching a critical stage as the possible mass range for the particle has become extremely narrow and some signal at a mass of about 125 GeV is starting to emerge. We study the implications of these LHC Higgs searches for Higgs-portal models of dark matter in a rather model independent way. Their impact on the cosmological relic density and on the direct detection rates are studied in the context of generic scalar, vector and fermionic thermal dark matter particles. Assuming a sufficiently small invisible Higgs decay branching ratio, we find that current data, in particular from the XENON experiment, essentially exclude fermionic dark matter as well as light, i.e. with masses below ≈60 GeV , scalar and vector dark matter particles. Possible observation of these particles at the planned upgrade of the XENON experiment as well in collider searches is discussed.DESY-11-240LPT-ORSAY-11-117arXiv:1112.3299oai:cds.cern.ch:14074592011-12-15
spellingShingle Particle Physics - Phenomenology
Djouadi, Abdelhak
Lebedev, Oleg
Mambrini, Yann
Quevillon, Jeremie
Implications of LHC searches for Higgs--portal dark matter
title Implications of LHC searches for Higgs--portal dark matter
title_full Implications of LHC searches for Higgs--portal dark matter
title_fullStr Implications of LHC searches for Higgs--portal dark matter
title_full_unstemmed Implications of LHC searches for Higgs--portal dark matter
title_short Implications of LHC searches for Higgs--portal dark matter
title_sort implications of lhc searches for higgs--portal dark matter
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/j.physletb.2012.01.062
http://cds.cern.ch/record/1407459
work_keys_str_mv AT djouadiabdelhak implicationsoflhcsearchesforhiggsportaldarkmatter
AT lebedevoleg implicationsoflhcsearchesforhiggsportaldarkmatter
AT mambriniyann implicationsoflhcsearchesforhiggsportaldarkmatter
AT quevillonjeremie implicationsoflhcsearchesforhiggsportaldarkmatter

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