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A comment on the quark mixing in the supersymmetric SU(4){sub x}O(4) GUT model

Technical Report:

Abstract

The SU(4) x O(4) and the ``flipped`` SU(5) x U(1) models seem to be the only possible Grand Universal Theories (GUT`s) derivable from string theories with Kac-Moody level K=1. Naively, the SU(4) x O(4) model, at least in its minimal GUT version, is characterized by the lack of any mixing in the quark sector. In this ``Comment`` we show that, although some mixing may be generated as a consequence of large vacuum-expectation-values for the scalar partners of the right-handed neutrinos, it turns out to be too small by several orders of magnitude, in net contrast with our experimental information concerning the Cabibbo mixing. Our result, which therefore rules out the minimal SU(4) x O(4) GUT model, also applies to ``flipped`` SU(5) x U(1) in the case of the embedding in SO(10). (Author).
Authors:
Publication Date:
Aug 01, 1992
Product Type:
Technical Report
Report Number:
RAL-92-058
Reference Number:
SCA: 662210; PA: AIX-24:008304; SN: 93000932983
Resource Relation:
Other Information: PBD: Aug 1992
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; QUARKS; KOBAYASHI-MASKAWA MATRIX; SU-4 GROUPS; SUPERSYMMETRY; GRAND UNIFIED THEORY; QUARK MODEL; SO-10 GROUPS; SPIN FLIP; STRING MODELS; 662210; UNIFIED THEORIES AND MODELS
OSTI ID:
10119606
Research Organizations:
Rutherford Appleton Lab., Chilton (United Kingdom)
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Other: ON: DE93613121; TRN: GB9203900008304
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
GBN
Size:
[9] p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Ranfone, S. A comment on the quark mixing in the supersymmetric SU(4){sub x}O(4) GUT model. United Kingdom: N. p., 1992. Web.
Ranfone, S. A comment on the quark mixing in the supersymmetric SU(4){sub x}O(4) GUT model. United Kingdom.
Ranfone, S. 1992. "A comment on the quark mixing in the supersymmetric SU(4){sub x}O(4) GUT model." United Kingdom.
@misc{etde_10119606,
title = {A comment on the quark mixing in the supersymmetric SU(4){sub x}O(4) GUT model}
author = {Ranfone, S}
abstractNote = {The SU(4) x O(4) and the ``flipped`` SU(5) x U(1) models seem to be the only possible Grand Universal Theories (GUT`s) derivable from string theories with Kac-Moody level K=1. Naively, the SU(4) x O(4) model, at least in its minimal GUT version, is characterized by the lack of any mixing in the quark sector. In this ``Comment`` we show that, although some mixing may be generated as a consequence of large vacuum-expectation-values for the scalar partners of the right-handed neutrinos, it turns out to be too small by several orders of magnitude, in net contrast with our experimental information concerning the Cabibbo mixing. Our result, which therefore rules out the minimal SU(4) x O(4) GUT model, also applies to ``flipped`` SU(5) x U(1) in the case of the embedding in SO(10). (Author).}
place = {United Kingdom}
year = {1992}
month = {Aug}
}