750 GeV resonance at the LHC and perturbative unitarity

If the di-photon excess at 750 GeV hinted by the 2015 data at the LHC is explained in terms of a scalar resonance participating in the breaking of the electro-weak symmetry, this resonance must be accompanied by other scalar states for perturbative unitarity in vector boson scattering to be preserve...

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Detalles Bibliográficos
Autores principales: Fabbrichesi, Marco, Urbano, Alfredo
Lenguaje:eng
Publicado: 2016
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1103/PhysRevD.94.035004
http://cds.cern.ch/record/2120567
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author Fabbrichesi, Marco
Urbano, Alfredo
author_facet Fabbrichesi, Marco
Urbano, Alfredo
author_sort Fabbrichesi, Marco
collection CERN
description If the di-photon excess at 750 GeV hinted by the 2015 data at the LHC is explained in terms of a scalar resonance participating in the breaking of the electro-weak symmetry, this resonance must be accompanied by other scalar states for perturbative unitarity in vector boson scattering to be preserved. The simplest set-up consistent with perturbative unitarity and with the data of the di-photon excess is the Georgi-Machacek model.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2016
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spelling cern-21205672023-03-14T17:39:15Zdoi:10.1103/PhysRevD.94.035004http://cds.cern.ch/record/2120567engFabbrichesi, MarcoUrbano, Alfredo750 GeV resonance at the LHC and perturbative unitarityParticle Physics - PhenomenologyIf the di-photon excess at 750 GeV hinted by the 2015 data at the LHC is explained in terms of a scalar resonance participating in the breaking of the electro-weak symmetry, this resonance must be accompanied by other scalar states for perturbative unitarity in vector boson scattering to be preserved. The simplest set-up consistent with perturbative unitarity and with the data of the di-photon excess is the Georgi-Machacek model.If the diphoton excess at 750 GeV hinted by the 2015 data at the LHC is explained in terms of a scalar resonance participating in the breaking of the electroweak symmetry, this resonance must be accompanied by other scalar states for perturbative unitarity in vector-boson scattering to be preserved. The simplest setup consistent with perturbative unitarity and with the data of the diphoton excess is the Georgi-Machacek model. The custodial singlet of the model is responsible for the diphoton excess; it is mainly produced in the diphoton fusion channel, and its loop-induced coupling to the photon pairs is enhanced by the doubly charged scalar with its large (dimensionful) coupling to the custodial singlet.If the di-photon excess at 750 GeV hinted by the 2015 data at the LHC is explained in terms of a scalar resonance participating in the breaking of the electro-weak symmetry, this resonance must be accompanied by other scalar states for perturbative unitarity in vector boson scattering to be preserved. The simplest set-up consistent with perturbative unitarity and with the data of the di-photon excess is the Georgi-Machacek model.arXiv:1601.02447CERN-TH-2016-007CERN-TH-2016-007oai:cds.cern.ch:21205672016-01-11
spellingShingle Particle Physics - Phenomenology
Fabbrichesi, Marco
Urbano, Alfredo
750 GeV resonance at the LHC and perturbative unitarity
title 750 GeV resonance at the LHC and perturbative unitarity
title_full 750 GeV resonance at the LHC and perturbative unitarity
title_fullStr 750 GeV resonance at the LHC and perturbative unitarity
title_full_unstemmed 750 GeV resonance at the LHC and perturbative unitarity
title_short 750 GeV resonance at the LHC and perturbative unitarity
title_sort 750 gev resonance at the lhc and perturbative unitarity
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1103/PhysRevD.94.035004
http://cds.cern.ch/record/2120567
work_keys_str_mv AT fabbrichesimarco 750gevresonanceatthelhcandperturbativeunitarity
AT urbanoalfredo 750gevresonanceatthelhcandperturbativeunitarity

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