Confronting CERN LEP data, the proton lifetime, and small neutrino masses by threshold effects in SO(10) with SU(2)[sub [ital L]][times]U(1)[sub [ital R]][times]SU(4)[sub [ital C]] intermediate breaking

Journal Article · Fri Apr 01 00:00:00 EST 1994 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.49.3704· OSTI ID:5123669

Rani, M; Parida, M K ^[1]

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1. Physics Department, North-Eastern Hill University, Bijni Complex, Laitumkhrah, Shillong 793003 (India)

We derive analytic formulas for mass scales and the GUT coupling constant in SO(10) with SU(2)[sub [ital L]][times]U(1)[sub [ital R]][times]SU(4)[sub [ital C]] ([equivalent to][ital G][sub 214]) intermediate breaking including two-loops and threshold effects. We find that the mass-scale predictions are in agreement with the CERN LEP data and proton-lifetime limit provided threshold effects due to heavy Higgs scalars are included. In one case the predicted proton lifetime is close to the experimental limit, while the [nu][sub [ital e]] mass is small, the [nu][sub [mu]] mass is accessible to laboratory experiments, and the [nu][sub [tau]] mass is consistent with the 17 keV neutrino. In the most interesting case the predicted proton lifetime is accessible to the Superkamiokande experiments and the [nu][sub [ital e]] and [nu][sub [mu]] masses have the right values needed for understanding the solar neutrino problem using the Mikheyev-Smirnov-Wolfenstein mechanism. The [nu][sub [tau]] mass is found to be consistent with the requirement for the dark matter of the Universe.

• OSTI ID: 5123669
• Journal Information: Physical Review, D (Particles Fields); (United States), Vol. 49:7; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Pa
GRAND UNIFIED THEORY
NEUTRINOS
PROTONS
MASS
LIFETIME
CERN
COUPLING CONSTANTS
EXPERIMENTAL DATA
HIGGS BOSONS
SO-10 GROUPS
SU-2 GROUPS
SU-4 GROUPS
SYMMETRY BREAKING
U-1 GROUPS
BARYONS
DATA
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
HADRONS
INFORMATION
INTERNATIONAL ORGANIZATIONS
LEPTONS
LIE GROUPS
MASSLESS PARTICLES
MATHEMATICAL MODELS
NUCLEONS
NUMERICAL DATA
PARTICLE MODELS
POSTULATED PARTICLES
SO GROUPS
SU GROUPS
SYMMETRY GROUPS
U GROUPS
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES
662210* - Specific Theories & Interaction Models
Particle Systematics- Unified Theories & Models- (1992-)
662110 - General Theory of Particles & Fields- Theory of Fields & Strings- (1992-)