Higgs Stability and the 750 GeV Diphoton Excess

We study the implications of a possible unstable particle with mass $M_X<$ TeV for the Higgs stability, naturalness and inflation. We pay particular attention to the case $M_X\approx$ 750 GeV, suggested by recent results of ATLAS and CMS on diphoton final states, and work within the minimal model...

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Detalles Bibliográficos
Autores principales: Salvio, Alberto, Mazumdar, Anupam
Lenguaje:eng
Publicado: 2015
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/j.physletb.2016.02.057
http://cds.cern.ch/record/2118255
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author Salvio, Alberto
Mazumdar, Anupam
author_facet Salvio, Alberto
Mazumdar, Anupam
author_sort Salvio, Alberto
collection CERN
description We study the implications of a possible unstable particle with mass $M_X<$ TeV for the Higgs stability, naturalness and inflation. We pay particular attention to the case $M_X\approx$ 750 GeV, suggested by recent results of ATLAS and CMS on diphoton final states, and work within the minimal model: we add to the Standard Model field content a pseudoscalar and a vector-like charged quark. This can stabilize the electroweak vacuum without invoking new physics at very high energies, which would give an unnaturally large contribution to the Higgs mass. We also show that inflation can be obtained via a UV modification of General Relativity.
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institution Organización Europea para la Investigación Nuclear
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spelling cern-21182552023-03-14T17:39:17Zdoi:10.1016/j.physletb.2016.02.057http://cds.cern.ch/record/2118255engSalvio, AlbertoMazumdar, AnupamHiggs Stability and the 750 GeV Diphoton ExcessParticle Physics - PhenomenologyParticle Physics - PhenomenologyWe study the implications of a possible unstable particle with mass $M_X<$ TeV for the Higgs stability, naturalness and inflation. We pay particular attention to the case $M_X\approx$ 750 GeV, suggested by recent results of ATLAS and CMS on diphoton final states, and work within the minimal model: we add to the Standard Model field content a pseudoscalar and a vector-like charged quark. This can stabilize the electroweak vacuum without invoking new physics at very high energies, which would give an unnaturally large contribution to the Higgs mass. We also show that inflation can be obtained via a UV modification of General Relativity.We study the implications of a possible unstable particle with mass MX<TeV for the Higgs stability, naturalness and inflation. We pay particular attention to the case MX≈750 GeV , suggested by recent results of ATLAS and CMS on diphoton final states, and work within the minimal model: we add to the Standard Model field content a pseudoscalar and a vector-like fermion carrying both color and electric charge. This can stabilize the electroweak vacuum without invoking new physics at very high energies, which would give an unnaturally large contribution to the Higgs mass. We also show that inflation can be obtained via a UV modification of General Relativity.We study the implications of a possible unstable particle with mass $M_X<$ TeV for the Higgs stability, naturalness and inflation. We pay particular attention to the case $M_X\approx$ 750 GeV, suggested by recent results of ATLAS and CMS on diphoton final states, and work within the minimal model: we add to the Standard Model field content a pseudoscalar and a vector-like fermion carrying both color and electric charge. This can stabilize the electroweak vacuum without invoking new physics at very high energies, which would give an unnaturally large contribution to the Higgs mass. We also show that inflation can be obtained via a UV modification of General Relativity.arXiv:1512.08184IFT-UAM-CSIC-15-140oai:cds.cern.ch:21182552015-12-27
spellingShingle Particle Physics - Phenomenology
Particle Physics - Phenomenology
Salvio, Alberto
Mazumdar, Anupam
Higgs Stability and the 750 GeV Diphoton Excess
title Higgs Stability and the 750 GeV Diphoton Excess
title_full Higgs Stability and the 750 GeV Diphoton Excess
title_fullStr Higgs Stability and the 750 GeV Diphoton Excess
title_full_unstemmed Higgs Stability and the 750 GeV Diphoton Excess
title_short Higgs Stability and the 750 GeV Diphoton Excess
title_sort higgs stability and the 750 gev diphoton excess
topic Particle Physics - Phenomenology
Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/j.physletb.2016.02.057
http://cds.cern.ch/record/2118255
work_keys_str_mv AT salvioalberto higgsstabilityandthe750gevdiphotonexcess
AT mazumdaranupam higgsstabilityandthe750gevdiphotonexcess

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