On the validity of the CMSSM interpretation of the diphoton excess

It has been proposed that the observed diphoton excess at 750 GeV could be explained within the constrained MSSM via resonantly produced stop bound states. We reanalyse this scenario critically and extend previous work to include the constraints from the stability of the electroweak vacuum and from...

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Detalles Bibliográficos
Autores principales: Dreiner, Herbi K., Krauss, Manuel E., O'Leary, Ben, Opferkuch, Toby, Staub, Florian
Lenguaje:eng
Publicado: 2016
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1103/PhysRevD.94.055013
http://cds.cern.ch/record/2195093
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author Dreiner, Herbi K.
Krauss, Manuel E.
O'Leary, Ben
Opferkuch, Toby
Staub, Florian
author_facet Dreiner, Herbi K.
Krauss, Manuel E.
O'Leary, Ben
Opferkuch, Toby
Staub, Florian
author_sort Dreiner, Herbi K.
collection CERN
description It has been proposed that the observed diphoton excess at 750 GeV could be explained within the constrained MSSM via resonantly produced stop bound states. We reanalyse this scenario critically and extend previous work to include the constraints from the stability of the electroweak vacuum and from the decays of the stoponium into a pair of Higgs bosons. It is shown that the interesting regions of parameter space with a light stop and Higgs of the desired mass are ruled out by these constraints. This conclusion isn't affected by the presence of the bound states because the binding energy is usually very small in the regions of parameter space which can explain the Higgs mass. Thus, this also leads to strong constraints on the diphoton production cross section which is in general too small.
id cern-2195093
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2016
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spelling cern-21950932023-03-14T19:35:30Zdoi:10.1103/PhysRevD.94.055013http://cds.cern.ch/record/2195093engDreiner, Herbi K.Krauss, Manuel E.O'Leary, BenOpferkuch, TobyStaub, FlorianOn the validity of the CMSSM interpretation of the diphoton excessParticle Physics - PhenomenologyIt has been proposed that the observed diphoton excess at 750 GeV could be explained within the constrained MSSM via resonantly produced stop bound states. We reanalyse this scenario critically and extend previous work to include the constraints from the stability of the electroweak vacuum and from the decays of the stoponium into a pair of Higgs bosons. It is shown that the interesting regions of parameter space with a light stop and Higgs of the desired mass are ruled out by these constraints. This conclusion isn't affected by the presence of the bound states because the binding energy is usually very small in the regions of parameter space which can explain the Higgs mass. Thus, this also leads to strong constraints on the diphoton production cross section which is in general too small.It has been proposed that the observed diphoton excess at 750 GeV could be explained within the constrained minimal supersymmetric standard model via resonantly produced stop bound states. We reanalyze this scenario critically and extend previous work to include the constraints from the stability of the electroweak vacuum and from the decays of the stoponium into a pair of Higgs bosons. It is shown that the interesting regions of parameter space with a light stop and Higgs of the desired mass are ruled out by these constraints. This conclusion is not affected by the presence of the bound states because the binding energy is usually very small in the regions of parameter space which can explain the Higgs mass. Thus, this also leads to strong constraints on the diphoton production cross section which is in general too small.It has been proposed that the observed diphoton excess at 750 GeV could be explained within the constrained minimal supersymmetric standard model via resonantly produced stop bound states. We reanalyze this scenario critically and extend previous work to include the constraints from the stability of the electroweak vacuum and from the decays of the stoponium into a pair of Higgs bosons. It is shown that the interesting regions of parameter space with a light stop and Higgs of the desired mass are ruled out by these constraints. This conclusion is not affected by the presence of the bound states because the binding energy is usually very small in the regions of parameter space which can explain the Higgs mass. Thus, this also leads to strong constraints on the diphoton production cross section which is in general too small.arXiv:1606.08811CERN-TH-2016-145BONN-TH-2016-05CERN-TH-2016-145BONN-TH-2016-05oai:cds.cern.ch:21950932016-06-28
spellingShingle Particle Physics - Phenomenology
Dreiner, Herbi K.
Krauss, Manuel E.
O'Leary, Ben
Opferkuch, Toby
Staub, Florian
On the validity of the CMSSM interpretation of the diphoton excess
title On the validity of the CMSSM interpretation of the diphoton excess
title_full On the validity of the CMSSM interpretation of the diphoton excess
title_fullStr On the validity of the CMSSM interpretation of the diphoton excess
title_full_unstemmed On the validity of the CMSSM interpretation of the diphoton excess
title_short On the validity of the CMSSM interpretation of the diphoton excess
title_sort on the validity of the cmssm interpretation of the diphoton excess
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1103/PhysRevD.94.055013
http://cds.cern.ch/record/2195093
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AT olearyben onthevalidityofthecmssminterpretationofthediphotonexcess
AT opferkuchtoby onthevalidityofthecmssminterpretationofthediphotonexcess
AT staubflorian onthevalidityofthecmssminterpretationofthediphotonexcess

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