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Extended weak-isospin and fermion masses in a unified model

Technical Report:

Abstract

It is interesting to ask whether the weak isospin gauge group SU(2){sub L} is embedded in a larger symmetry group. From a model-building perspective there are usually too many possible answers to this question, because extensions invariable introduce new gauge anomalies. New fermions then have to be postulated, usually in an ad hoc manner, to cancel these anomalies. However, the quark-lepton symmetric models of Foot and Lew allow one to extend the weak-isospin group in a disciplined way, because the new anomalies can now cancel between quarks and generalized leptons. The basis of a model with gauge group G = [SU(3)]{sup 4} are presented in this paper. It was found that, through left-right symmetry, a partial unification of the gauge coupling constants of the theory naturally suggests itself, and that the symmetries of the model can impose restrictions on fermion masses and mixing angles at tree-level, which renormalization effects and mixing phenomena may modify in a predictive manner. 19 refs.
Publication Date:
Dec 31, 1992
Product Type:
Technical Report
Report Number:
UM-P-91/86; OZ-91/12.
Reference Number:
SCA: 662210; PA: AIX-24:003474; SN: 93000913785
Resource Relation:
Other Information: PBD: [1992]
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; FERMIONS; MASS RENORMALIZATION; UNIFIED GAUGE MODELS; SYMMETRY BREAKING; HIGGS BOSONS; ISOSPIN; LEPTONS; MATRICES; QUARKS; SU-2 GROUPS; SU-3 GROUPS; WEAK INTERACTIONS; 662210; UNIFIED THEORIES AND MODELS
Sponsoring Organizations:
Australian Research Council, Canberra, ACT (Australia)
OSTI ID:
10109088
Research Organizations:
Melbourne Univ., Parkville, VIC (Australia). School of Physics
Country of Origin:
Australia
Language:
English
Other Identifying Numbers:
Other: ON: DE93609933; TRN: AU9212915003474
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
INIS
Size:
[32] p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Joshi, G C, and Volkas, R R. Extended weak-isospin and fermion masses in a unified model. Australia: N. p., 1992. Web.
Joshi, G C, & Volkas, R R. Extended weak-isospin and fermion masses in a unified model. Australia.
Joshi, G C, and Volkas, R R. 1992. "Extended weak-isospin and fermion masses in a unified model." Australia.
@misc{etde_10109088,
title = {Extended weak-isospin and fermion masses in a unified model}
author = {Joshi, G C, and Volkas, R R}
abstractNote = {It is interesting to ask whether the weak isospin gauge group SU(2){sub L} is embedded in a larger symmetry group. From a model-building perspective there are usually too many possible answers to this question, because extensions invariable introduce new gauge anomalies. New fermions then have to be postulated, usually in an ad hoc manner, to cancel these anomalies. However, the quark-lepton symmetric models of Foot and Lew allow one to extend the weak-isospin group in a disciplined way, because the new anomalies can now cancel between quarks and generalized leptons. The basis of a model with gauge group G = [SU(3)]{sup 4} are presented in this paper. It was found that, through left-right symmetry, a partial unification of the gauge coupling constants of the theory naturally suggests itself, and that the symmetries of the model can impose restrictions on fermion masses and mixing angles at tree-level, which renormalization effects and mixing phenomena may modify in a predictive manner. 19 refs.}
place = {Australia}
year = {1992}
month = {Dec}
}