Titre du document

Hierarchical fermion masses and mixing angles from the flipped string

Lien vers le document
Nom du Corpus

AstroConcepts

Auteur(s)
  • Jorge L. Lopez 1
  • D.V. Nanopoulos 1
Affiliation(s)
  • Center for Theoretical Physics, Department of Physics, Texas A&M University, College Station, TX 77843-4242, USA
Résumé

We present a general method to obtain specific predictions for the fermion masses and mixings in the low-energy theory of the flipped SU(5) × U(1) superstring model. The condition of unbroken N = 1 supergravity at MPl in the presence of an anomalous UA(1) symmetry gives strong constraints on the parameters of the model. We obtain: (i) a top quark mass between 60 and 100 GeV, with values close to 100 GeV strongly favored; (ii) up- and down-type quark and lepton mass ratios and Cabibbo-Kobayashi-Maskawa mixings, which could be found consistent with their accepted values simultaneously in parameter space; (iii) a direct connection between the hierarchical fermion mass spectrum and baryon decay modes, we find p ? ?+?0, ???+; n ? ?+??, ???0, with ?p ? ?n ? 1035±2y; and (iv) a vanishing bare u quark mass that solves the strong CP problem in this model and is not in conflict with previous expectations. We stress that a full dynamical calculation would unambigously determine these observables and hence constitute a definite test of the model. However, the whole framework is so constrained that crucial information can already be extracted from the model at this stage.

Langue(s) du document
Anglais
Année de publication
1980
Revue

Nuclear Physics, Section B

Éditeur
Elsevier
Type de publication
journal
Type de document
research-article
Présence de XML structuré
Non
Version de PDF
1.2
Score de qualité du texte
9.352
Nom du concept
  • Superstrings
Catégories Science-Metrix
  • 1 - natural sciences ; 2 - physics & astronomy ; 3 - nuclear & particles physics
Catégories Inist
  • 1 - sciences appliquees, technologies et medecines ; 2 - sciences exactes et technologie ; 3 - physique ; 4 - physique des particules elementaires et champs
Catégories Scopus
  • 1 - Physical Sciences ; 2 - Physics and Astronomy ; 3 - Nuclear and High Energy Physics
Catégories WoS
  • 1 - science ; 2 - physics, particles & fields
Identifiant ISTEX
5204CD3EAE7C88AB43A8CC3824C4FC9496F55310
ark:/67375/6H6-N8L4CFBR-0
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