Radiative contributions to quark and lepton masses in grand unified theories

Journal Article · Wed Dec 15 00:00:00 UTC 1982 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.26.3701· OSTI ID:6367798

de Teramond, G F

The mass perturbation and the evolution equation of fermion masses are studied in different gauge models on the basis of the Dyson-Schwinger equation. In theories with spontaneous symmetry breaking, we recover the results obtained using the renormalization-group method for momentum scales well above symmetry breaking and obtain new results for energies close to or well below, the symmetry-violating scale, where spontaneous symmetry breaking gives an important contribution to the self-mass of a fermion. We examine the contribution to self-masses in the SU(3) x U(1)/sub em/ gauge theory and in the SU(3) x SU(2) x U(1) model and discuss the relevance of embedding the standard component model in the structure of SU(5). For asymptotically free grand unified models, the self-masses are individually finite with no constraint on the number of quark or lepton flavors. Within this context we examine the possibility that the proton-neutron mass difference is determined by the very short distance scale associated with the unified theory of the strong, weak, and electromagnetic interactions.

• Research Organization: Escuela de Fisica, Universidad de Costa Rica, San Jose, Costa Rica
• DOE Contract Number: NONE
• OSTI ID: 6367798
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 26:12; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645200* -- High Energy Physics-- Particle Interactions & Properties-Theoretical
645400 -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CORRECTIONS
ELEMENTARY PARTICLES
FERMIONS
LEPTONS
LIE GROUPS
MASS
MATHEMATICAL MODELS
PARTICLE MODELS
PERTURBATION THEORY
POSTULATED PARTICLES
QUARKS
RADIATIVE CORRECTIONS
RENORMALIZATION
SU GROUPS
SU-2 GROUPS
SYMMETRY BREAKING
SYMMETRY GROUPS
U GROUPS
U-1 GROUPS
UNIFIED GAUGE MODELS