Proton lifetime in the SO(10) grand unified model

Journal Article · Mon Apr 01 04:00:00 EST 1985 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:5238548

Asatryan, G M; Ioannisyan, A N

The Grand Unified Model based on the orthogonal group SO(10) is treated. The symmetry breaks down to the standard group SU(3)/sub C/ x SU(2)/sub L/ x U(1)/sub Y/ in two stages through the vacuum expectation values of the 45 and 126 Higgs fields. The scales M/sub X/ of SO(10) symmetry breaking and M/sub R/ of left-right symmetry breaking are calculated making use of the renormalization group equations in the two-loop approximation. It is shown that the proton lifetime in the SO(10) model can be sufficiently high under available experimental constraints on the Weinberg angle to be consistent with recent proton-decay data. Possible constraints on the neutrino masses which arise in the model are treated as well.

• Research Organization: Erevan Physics Institute
• OSTI ID: 5238548
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 41:4; ISSN SJNCA
• Country of Publication: United States
• Language: English

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
DECAY
ELECTROWEAK MIXING ANGLE
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
GRAND UNIFIED THEORY
HADRONS
LEPTONS
LIE GROUPS
LIFETIME
MASS
MASSLESS PARTICLES
MATHEMATICAL MODELS
NEUTRINOS
NUCLEONS
PARTICLE MODELS
PROTONS
SO GROUPS
SO-10 GROUPS
SYMMETRY BREAKING
SYMMETRY GROUPS
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES