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Implications of Anomalous U(1) Symmetry in Unified Models: the Flipped SU(5) x U(1) Paradigm

A generic feature of string-derived models is the appearance of an anomalousAbelian U(1)_A symmetry which, among other properties, constrains the Yukawacouplings and distinguishes the three families from each other. In this paper,we discuss in a model-independent way the general constraints imposed...

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Detalles Bibliográficos
Autores principales: Ellis, John R., Leontaris, G.K., Rizos, J.
Lenguaje:eng
Publicado: 2000
Materias:
Acceso en línea:https://dx.doi.org/10.1088/1126-6708/2000/05/001
http://cds.cern.ch/record/428554
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author Ellis, John R.
Leontaris, G.K.
Rizos, J.
author_facet Ellis, John R.
Leontaris, G.K.
Rizos, J.
author_sort Ellis, John R.
collection CERN
description A generic feature of string-derived models is the appearance of an anomalousAbelian U(1)_A symmetry which, among other properties, constrains the Yukawacouplings and distinguishes the three families from each other. In this paper,we discuss in a model-independent way the general constraints imposed by such aU(1)_A symmetry on fermion masses, R-violating couplings and proton-decayoperators in a generic flipped SU(5) x U(1)' model. We construct all possibleviable fermion mass textures and give various examples of effective low-energymodels which are distinguished from each other by their different predictionsfor B-, L- and R-violating effects. We pay particular attention to predictionsfor neutrino masses, in the light of the recent Super-Kamiokande data.
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institution Organización Europea para la Investigación Nuclear
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publishDate 2000
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spelling cern-4285542023-10-04T06:07:32Zdoi:10.1088/1126-6708/2000/05/001http://cds.cern.ch/record/428554engEllis, John R.Leontaris, G.K.Rizos, J.Implications of Anomalous U(1) Symmetry in Unified Models: the Flipped SU(5) x U(1) ParadigmParticle Physics - PhenomenologyA generic feature of string-derived models is the appearance of an anomalousAbelian U(1)_A symmetry which, among other properties, constrains the Yukawacouplings and distinguishes the three families from each other. In this paper,we discuss in a model-independent way the general constraints imposed by such aU(1)_A symmetry on fermion masses, R-violating couplings and proton-decayoperators in a generic flipped SU(5) x U(1)' model. We construct all possibleviable fermion mass textures and give various examples of effective low-energymodels which are distinguished from each other by their different predictionsfor B-, L- and R-violating effects. We pay particular attention to predictionsfor neutrino masses, in the light of the recent Super-Kamiokande data.A generic feature of string-derived models is the appearance of an anomalous Abelian U(1)_A symmetry which, among other properties, constrains the Yukawa couplings and distinguishes the three families from each other. In this paper, we discuss in a model-independent way the general constraints imposed by such a U(1)_A symmetry on fermion masses, R-violating couplings and proton-decay operators in a generic flipped SU(5) x U(1)' model. We construct all possible viable fermion mass textures and give various examples of effective low-energy models which are distinguished from each other by their different predictions for B-, L- and R-violating effects. We pay particular attention to predictions for neutrino masses, in the light of the recent Super-Kamiokande data.hep-ph/0002263CERN-TH-2000-064IOA-02-2000CERN-TH-2000-064IOA-2000-2oai:cds.cern.ch:4285542000-02-25
spellingShingle Particle Physics - Phenomenology
Ellis, John R.
Leontaris, G.K.
Rizos, J.
Implications of Anomalous U(1) Symmetry in Unified Models: the Flipped SU(5) x U(1) Paradigm
title Implications of Anomalous U(1) Symmetry in Unified Models: the Flipped SU(5) x U(1) Paradigm
title_full Implications of Anomalous U(1) Symmetry in Unified Models: the Flipped SU(5) x U(1) Paradigm
title_fullStr Implications of Anomalous U(1) Symmetry in Unified Models: the Flipped SU(5) x U(1) Paradigm
title_full_unstemmed Implications of Anomalous U(1) Symmetry in Unified Models: the Flipped SU(5) x U(1) Paradigm
title_short Implications of Anomalous U(1) Symmetry in Unified Models: the Flipped SU(5) x U(1) Paradigm
title_sort implications of anomalous u(1) symmetry in unified models: the flipped su(5) x u(1) paradigm
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1088/1126-6708/2000/05/001
http://cds.cern.ch/record/428554
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