SU(5){times}SU(5) unification and automatic {ital R}-parity conservation

Journal Article · Fri Nov 01 04:00:00 EST 1996 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.54.5728· OSTI ID:388462

Mohapatra, R N ^[1]

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1. Department of Physics and Astronomy, University of Maryland, College Park, Maryland 20742 (United States)

A new supersymmetric grand unified model based on the gauge group SU(5){times}SU(5) is presented which automatically conserves {ital R} parity, leading thereby to a cold dark matter candidate which is stable without the need for any additional global symmetries. This model also provides an embedding of the conventional seesaw mechanism for neutrino masses using the (15,1)+(1,{bar 1}{bar 5}) representations which may have a better chance of arising from level-two compactification of superstring theories than the {bold {bar 1}{bar 2}{bar 6}}-dimensional representation used in the SO(10) GUT realization of this mechanism. The doublet-triplet splitting can also be implemented without introducing (24,1)+(1,24) Higgs superfields into theory. Coupling constant unification leading to various symmetry-breaking scales is also discussed in the one-loop approximation. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 388462
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 9 Vol. 54; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
COMPACTIFICATION
GRAND UNIFIED THEORY
HIGGS BOSONS
MASS
NEUTRINOS
PARITY
SO-10 GROUPS
SU-5 GROUPS
SUPERSYMMETRY
SYMMETRY BREAKING