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Low {alpha}{sub strong} (M{sub Z}), intermediate scale SUSY SO(10) and its implications

Technical Report:

Abstract

We show that one of the ways of obtaining consistency between the idea of supersymmetric grand unification and an apparent low value of {alpha}{sub strong} (M{sub Z}) {approx_equal}.11 indicated by several low energy experiments is to have an intermediate scale corresponding to a local B - L symmetry breaking around the mass scale of 10{sup 10} to 10{sup 12} GeV. We discuss the realization of this idea within the framework of supersymmetric SO(10) grand unified theories with spectra of particles derivable from simple superstring-inspired versions of this model. We then study the b - {tau} mass unification within this class of models and show that due to the influence of new gauge and Yukawa interactions beyond the intermediate scale, the prediction of the b-quark mass comes out well within the presently accepted values. We also discuss an un-orthodox class of SUSY models inspired by some theoretical considerations having two pairs of Higgs doubles at low energy and show that they also can lead to unification with intermediate scales and low {alpha}{sub s} (M{sub Z}) as desired. (author). 18 refs, 6 figs, 3 tabs.
Authors:
Brahmachari, B; [1]  Mohapatra, R N [2] 
  1. International Centre for Theoretical Physics, Trieste (Italy)
  2. Maryland Univ., College Park, MD (United States). Dept. of Physics
Publication Date:
May 01, 1995
Product Type:
Technical Report
Report Number:
IC-95/87; UMD-PP-95-138.
Reference Number:
SCA: 662210; 662120; PA: AIX-26:064492; EDB-95:127032; ERA-20:027905; NTS-96:007023; SN: 95001458485
Resource Relation:
Other Information: PBD: May 1995
Subject:
66 PHYSICS; GRAND UNIFIED THEORY; SO-10 GROUPS; SUPERSYMMETRY; GAUGE INVARIANCE; HIGGS BOSONS; MASS; QUARKS; SUPERSTRING MODELS; SYMMETRY BREAKING; TOP PARTICLES; YUKAWA NONLOCAL THEORY
OSTI ID:
100044
Research Organizations:
International Centre for Theoretical Physics (ICTP), Trieste (Italy)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Other: ON: DE95635834; CNN: Grant PHY9421385; TRN: XA9539784064492
Availability:
INIS; OSTI as DE95635834
Submitting Site:
INIS
Size:
10 p.
Announcement Date:
Oct 02, 1995

Technical Report:

Citation Formats

Brahmachari, B, and Mohapatra, R N. Low {alpha}{sub strong} (M{sub Z}), intermediate scale SUSY SO(10) and its implications. IAEA: N. p., 1995. Web.
Brahmachari, B, & Mohapatra, R N. Low {alpha}{sub strong} (M{sub Z}), intermediate scale SUSY SO(10) and its implications. IAEA.
Brahmachari, B, and Mohapatra, R N. 1995. "Low {alpha}{sub strong} (M{sub Z}), intermediate scale SUSY SO(10) and its implications." IAEA.
@misc{etde_100044,
title = {Low {alpha}{sub strong} (M{sub Z}), intermediate scale SUSY SO(10) and its implications}
author = {Brahmachari, B, and Mohapatra, R N}
abstractNote = {We show that one of the ways of obtaining consistency between the idea of supersymmetric grand unification and an apparent low value of {alpha}{sub strong} (M{sub Z}) {approx_equal}.11 indicated by several low energy experiments is to have an intermediate scale corresponding to a local B - L symmetry breaking around the mass scale of 10{sup 10} to 10{sup 12} GeV. We discuss the realization of this idea within the framework of supersymmetric SO(10) grand unified theories with spectra of particles derivable from simple superstring-inspired versions of this model. We then study the b - {tau} mass unification within this class of models and show that due to the influence of new gauge and Yukawa interactions beyond the intermediate scale, the prediction of the b-quark mass comes out well within the presently accepted values. We also discuss an un-orthodox class of SUSY models inspired by some theoretical considerations having two pairs of Higgs doubles at low energy and show that they also can lead to unification with intermediate scales and low {alpha}{sub s} (M{sub Z}) as desired. (author). 18 refs, 6 figs, 3 tabs.}
place = {IAEA}
year = {1995}
month = {May}
}