Phenomenological implications of supersymmetry breaking by the dilaton

We investigate the low energy properties of string vacua with spontaneously broken $N=1$ supersymmetry by a dilaton $F$-term. As a consequence of the universal couplings of the dilaton, the supersymmetric mass spectrum is determined in terms of only three independent parameters and more constrained...

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Detalles Bibliográficos
Autores principales: Barbieri, Riccardo, Louis, Jan, Moretti, Mauro
Lenguaje:eng
Publicado: 1993
Materias:
Particle Physics - Theory
Acceso en línea:https://dx.doi.org/10.1016/0370-2693(93)90981-M
http://cds.cern.ch/record/249282
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author Barbieri, Riccardo
Louis, Jan
Moretti, Mauro
author_facet Barbieri, Riccardo
Louis, Jan
Moretti, Mauro
author_sort Barbieri, Riccardo
collection CERN
description We investigate the low energy properties of string vacua with spontaneously broken $N=1$ supersymmetry by a dilaton $F$-term. As a consequence of the universal couplings of the dilaton, the supersymmetric mass spectrum is determined in terms of only three independent parameters and more constrained than in the minimal supersymmetric Standard Model. For a $\mu$-term induced by the \K\ potential the parameter space becomes two-dimensional; in the allowed regions of this parameter space we find that most supersymmetric particles are determined solely by the gluino mass. The Higgs is rather light and the top-quark mass always lower than 180 GeV.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1993
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spelling cern-2492822023-03-14T19:27:37Zdoi:10.1016/0370-2693(93)90981-Mhttp://cds.cern.ch/record/249282engBarbieri, RiccardoLouis, JanMoretti, MauroPhenomenological implications of supersymmetry breaking by the dilatonParticle Physics - TheoryWe investigate the low energy properties of string vacua with spontaneously broken $N=1$ supersymmetry by a dilaton $F$-term. As a consequence of the universal couplings of the dilaton, the supersymmetric mass spectrum is determined in terms of only three independent parameters and more constrained than in the minimal supersymmetric Standard Model. For a $\mu$-term induced by the \K\ potential the parameter space becomes two-dimensional; in the allowed regions of this parameter space we find that most supersymmetric particles are determined solely by the gluino mass. The Higgs is rather light and the top-quark mass always lower than 180 GeV.We investigate the low energy properties of string vacua with spontaneously broken $N=1$ supersymmetry by a dilaton $F$-term. As a consequence of the universal couplings of the dilaton, the supersymmetric mass spectrum is determined in terms of only three independent parameters and more constrained than in the minimal supersymmetric Standard Model. For a $\mu$-term induced by the Kahler potential the parameter space becomes two-dimensional; in the allowed regions of this parameter space we find either a top with a mass close to its current bound or a light Higgs with the top Yukawa coupling close to its infrared fixed point, the top mass in the range $150--160$ GeV and all supersymmetric particles heavy.We investigate the low energy properties of string vacua with spontaneously broken $N=1$ supersymmetry by a dilaton $F$-term. As a consequence of the universal couplings of the dilaton, the supersymmetric mass spectrum is determined in terms of only three independent parameters and more constrained than in the minimal supersymmetric Standard Model. For a $\mu$-term induced by the Kahler potential the parameter space becomes two-dimensional; in the allowed regions of this parameter space we find either a top with a mass close to its current bound or a light Higgs with the top Yukawa coupling close to its infrared fixed point, the top mass in the range $150--160$ GeV and all supersymmetric particles heavy.We investigate the low energy properties of string vacua with spontaneously broken N = 1 supersymmetry by a dilaton F -term. As a consequence of the universal couplings of the dilaton, the supersymmetric mass spectrum is determined in terms of only three independent parameters and more constrained than in the minimal supersymmetric Standard Model. For a μ-term induced by the Kähler potential the parameter space becomes two-dimensional; in the allowed regions of this parameter space we find that most supersymmetric particles are determined solely by the gluino mass. The Higgs is rather light and the top-quark mass always lower than 180 GeV.hep-ph/9305262CERN-TH-6856-93CERN-TH-6856-93oai:cds.cern.ch:2492821993
spellingShingle Particle Physics - Theory
Barbieri, Riccardo
Louis, Jan
Moretti, Mauro
Phenomenological implications of supersymmetry breaking by the dilaton
title Phenomenological implications of supersymmetry breaking by the dilaton
title_full Phenomenological implications of supersymmetry breaking by the dilaton
title_fullStr Phenomenological implications of supersymmetry breaking by the dilaton
title_full_unstemmed Phenomenological implications of supersymmetry breaking by the dilaton
title_short Phenomenological implications of supersymmetry breaking by the dilaton
title_sort phenomenological implications of supersymmetry breaking by the dilaton
topic Particle Physics - Theory
url https://dx.doi.org/10.1016/0370-2693(93)90981-M
http://cds.cern.ch/record/249282
work_keys_str_mv AT barbieririccardo phenomenologicalimplicationsofsupersymmetrybreakingbythedilaton
AT louisjan phenomenologicalimplicationsofsupersymmetrybreakingbythedilaton
AT morettimauro phenomenologicalimplicationsofsupersymmetrybreakingbythedilaton

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