Grand unification and proton stability near the Peccei-Quinn scale

Journal Article · Wed Sep 01 04:00:00 EDT 2004 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.70.055009· OSTI ID:20705163

Dias, Alex G; Pleitez, V ^[1]

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1. Instituto de Fisica, Universidade de Sao Paulo, C.P. 66.318, 05315-970 Sao Paulo, SP (Brazil)

We show that in an SU(2)xU(1) model with a Dine-Fischler-Srednicki-like invisible axion it is possible to obtain (i) the convergence of the three gauge coupling constants at an energy scale near the Peccei-Quinn scale; (ii) the correct value for sin{sup 2}{theta}{sub W}(M{sub Z}); (iii) the stabilization of the proton by the cyclic Z{sub 13}xZ{sub 3} symmetries which also stabilize the axion as a solution to the strong CP problem. Concerning the convergence of the three coupling constants and the prediction of the weak mixing angle at the Z peak, this model is as good as the minimal supersymmetric standard model with {mu}{sub SUSY}=M{sub Z}. We also consider the standard model with six and seven Higgs doublets. The main calculations were done in the 1-loop approximation but we briefly consider the 2-loop contributions.

• OSTI ID: 20705163
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 5 Vol. 70; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AXIONS
CONVERGENCE
COUPLING CONSTANTS
CP INVARIANCE
HIGGS BOSONS
HIGGS MODEL
PARTICLE DECAY
PROTONS
STABILITY
STANDARD MODEL
SU-2 GROUPS
SUPERSYMMETRY
WEINBERG ANGLE