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First Glimpses at Higgs' face
The 8 TeV LHC Higgs search data just released indicates the existence of a scalar resonance with mass ~ 125 GeV. We examine the implications of the data reported by ATLAS, CMS and the Tevatron collaborations on understanding the properties of this scalar by performing joint fits on its couplings to...
Autores principales: | , , , |
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Lenguaje: | eng |
Publicado: |
2012
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1007/JHEP12(2012)045 http://cds.cern.ch/record/1460766 |
_version_ | 1780925257737043968 |
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author | Espinosa, J.R. Grojean, C. Muhlleitner, M. Trott, M. |
author_facet | Espinosa, J.R. Grojean, C. Muhlleitner, M. Trott, M. |
author_sort | Espinosa, J.R. |
collection | CERN |
description | The 8 TeV LHC Higgs search data just released indicates the existence of a scalar resonance with mass ~ 125 GeV. We examine the implications of the data reported by ATLAS, CMS and the Tevatron collaborations on understanding the properties of this scalar by performing joint fits on its couplings to other Standard Model particles. We discuss and characterize to what degree this resonance has the properties of the Standard Model (SM) Higgs, and consider what implications can be extracted for New Physics in a (mostly) model-independent fashion. We find that, if the Higgs couplings to fermions and weak vector bosons are allowed to differ from their standard values, the SM is ~ 2 sigma from the best fit point to current data. Fitting to a possible invisible decay branching ratio, we find BR_{inv} = 0.05\pm 0.32\ (95% C.L.) We also discuss and develop some ways of using the data in order to bound or rule out models which modify significantly the properties of this scalar resonance and apply these techniques to the global current data set. |
id | cern-1460766 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2012 |
record_format | invenio |
spelling | cern-14607662019-09-30T06:29:59Zdoi:10.1007/JHEP12(2012)045http://cds.cern.ch/record/1460766engEspinosa, J.R.Grojean, C.Muhlleitner, M.Trott, M.First Glimpses at Higgs' faceParticle Physics - PhenomenologyThe 8 TeV LHC Higgs search data just released indicates the existence of a scalar resonance with mass ~ 125 GeV. We examine the implications of the data reported by ATLAS, CMS and the Tevatron collaborations on understanding the properties of this scalar by performing joint fits on its couplings to other Standard Model particles. We discuss and characterize to what degree this resonance has the properties of the Standard Model (SM) Higgs, and consider what implications can be extracted for New Physics in a (mostly) model-independent fashion. We find that, if the Higgs couplings to fermions and weak vector bosons are allowed to differ from their standard values, the SM is ~ 2 sigma from the best fit point to current data. Fitting to a possible invisible decay branching ratio, we find BR_{inv} = 0.05\pm 0.32\ (95% C.L.) We also discuss and develop some ways of using the data in order to bound or rule out models which modify significantly the properties of this scalar resonance and apply these techniques to the global current data set.The 8 TeV LHC Higgs search data just released indicates the existence of a scalar resonance with mass ~ 125 GeV. We examine the implications of the data reported by ATLAS, CMS and the Tevatron collaborations on understanding the properties of this scalar by performing joint fits on its couplings to other Standard Model particles. We discuss and characterize to what degree this resonance has the properties of the Standard Model (SM) Higgs, and consider what implications can be extracted for New Physics in a (mostly) model-independent fashion. We find that, if the Higgs couplings to fermions and weak vector bosons are allowed to differ from their standard values, the SM is ~ 2 sigma from the best fit point to current data. Fitting to a possible invisible decay branching ratio, we find BR_{inv} = 0.05\pm 0.32\ (95% C.L.) We also discuss and develop some ways of using the data in order to bound or rule out models which modify significantly the properties of this scalar resonance and apply these techniques to the global current data set.CERN-PH-TH-2012-200arXiv:1207.1717CERN-PH-TH-2012-200oai:cds.cern.ch:14607662012-07-09 |
spellingShingle | Particle Physics - Phenomenology Espinosa, J.R. Grojean, C. Muhlleitner, M. Trott, M. First Glimpses at Higgs' face |
title | First Glimpses at Higgs' face |
title_full | First Glimpses at Higgs' face |
title_fullStr | First Glimpses at Higgs' face |
title_full_unstemmed | First Glimpses at Higgs' face |
title_short | First Glimpses at Higgs' face |
title_sort | first glimpses at higgs' face |
topic | Particle Physics - Phenomenology |
url | https://dx.doi.org/10.1007/JHEP12(2012)045 http://cds.cern.ch/record/1460766 |
work_keys_str_mv | AT espinosajr firstglimpsesathiggsface AT grojeanc firstglimpsesathiggsface AT muhlleitnerm firstglimpsesathiggsface AT trottm firstglimpsesathiggsface |