Minimal supersymmetric SU(5) and gauge coupling unification at three loops

Journal Article · Mon Nov 01 00:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.82.095013· OSTI ID:21503829

Martens, W; Mihaila, L; Salomon, J; Steinhauser, M ^[1]

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1. Institut fuer Theoretische Teilchenphysik, Karlsruhe Institute of Technology (KIT), 76128 Karlsruhe (Germany)

We consider the relations between the gauge couplings at the electroweak scale and the high scale where unification of the three gauge couplings is expected. Threshold corrections are incorporated both at the supersymmetric and at the grand unified scale and, where available, three-loop running and two-loop decoupling are employed. We study the impact of the current experimental uncertainties of the coupling constants and the supersymmetric mass spectrum on the prediction of the superheavy masses within the so-called minimal supersymmetric SU(5). As a main result of the three-loop analysis we confirm that minimal supersymmetric SU(5) cannot be ruled out by the current experimental data on proton decay rates.

• OSTI ID: 21503829
• Journal Information: Physical Review. D, Particles Fields, Vol. 82, Issue 9; Other Information: DOI: 10.1103/PhysRevD.82.095013; (c) 2010 American Institute of Physics; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CORRECTIONS
COUPLING
COUPLING CONSTANTS
DECOUPLING
FORECASTING
GAUGE INVARIANCE
GRAND UNIFIED THEORY
MASS
MASS SPECTRA
PARTICLE DECAY
PROTONS
SU-5 GROUPS
SUPERSYMMETRY
BARYONS
DECAY
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
HADRONS
INVARIANCE PRINCIPLES
LIE GROUPS
MATHEMATICAL MODELS
NUCLEONS
PARTICLE MODELS
QUANTUM FIELD THEORY
SPECTRA
SU GROUPS
SYMMETRY
SYMMETRY GROUPS
UNIFIED GAUGE MODELS