Modification of predictions of grand unified theories in the presence of spontaneous compactification

Journal Article · Mon Mar 12 04:00:00 EST 1984 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.52.875· OSTI ID:6825909

Shafi, Q; Wetterich, C

There are speculations that grand unified theories (GUT's) may arise from higher-dimensional models of gravity in which the extra dimensions are spontaneously compactified. The GUT predictions for proton decay and sin/sup 2/theta/sub w/ can be significantly modified when nonrenormalizable interactions, scaled by inverse powers of the compactification scale M/sub c/, are added to the standard GUT Lagrangian. For example, the decay rate for p..-->..e/sup +/..pi../sup 0/ in minimal SU(5) can be lowered by one (two) orders of magnitude if M/sub c/ is on the order of 10/sup 17/ GeV. However, sin/sup 2/theta/sub W/ then decreases by 0.005 (0.01). The SO(10) model is also discussed.

• Research Organization: Bartol Research Foundation, University of Delaware, Newark, Delaware 19716
• DOE Contract Number: AC02-78ER05007
• OSTI ID: 6825909
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 52:11; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

645400* -- High Energy Physics-- Field Theory
657003 -- Theoretical & Mathematical Physics-- Relativity & Gravitation
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
COUPLING
DECAY
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
FUNCTIONS
GAUGE INVARIANCE
GRAND UNIFIED THEORY
GRAVITATION
HADRONS
INVARIANCE PRINCIPLES
LAGRANGIAN FUNCTION
LIE GROUPS
MANY-DIMENSIONAL CALCULATIONS
MATHEMATICAL MODELS
NUCLEONS
PARTICLE DECAY
PARTICLE MODELS
PROTONS
SEMILEPTONIC DECAY
SO GROUPS
SO-10 GROUPS
SU GROUPS
SU-5 GROUPS
SYMMETRY GROUPS
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES
WEAK PARTICLE DECAY