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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...
Autores principales: | , , |
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Lenguaje: | eng |
Publicado: |
2000
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1088/1126-6708/2000/05/001 http://cds.cern.ch/record/428554 |
_version_ | 1780895166125572096 |
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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. |
id | cern-428554 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2000 |
record_format | invenio |
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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