Fermion masses and hierarchy of symmetry breaking

Journal Article · Sun Jun 15 00:00:00 EDT 1980 · Phys. Rev., D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.21.3417· OSTI ID:5294289

Branco, G C; Nilles, H P; Rittenberg, V

We suggest that the breaking of a symmetry unifying the families of fermions occurs in stages. We consider the total Lagrangian to be invariant under the group SU(2) x U(1) x G-tilde, where G-tilde is a discrete group. The Higgs potential is, however, invariant under SU(2) x U(1) x G, where GcontainsG. In a first stage G-tilde is broken to a subgroup His contained inG, but H is not contained in G-tilde. The u and d quarks are naturally massless at the tree level, and we discuss how they could acquire mass through radiative corrections.

• Research Organization: Carnegie-Mellon University, Pittsburgh, Pennsylvania 15213
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 5294289
• Journal Information: Phys. Rev., D; (United States), Journal Name: Phys. Rev., D; (United States) Vol. 21:12; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645301* -- High Energy Physics-- Particle Invariance Principles & Symmetries-- General-- (-1987)
645400 -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
CORRECTIONS
ELEMENTARY PARTICLES
FERMIONS
FUNCTIONS
GOLDSTONE BOSONS
HIGGS MODEL
LAGRANGIAN FUNCTION
LIE GROUPS
MASS SPECTRA
MATHEMATICAL MODELS
PARTICLE MODELS
POSTULATED PARTICLES
QUARKS
RADIATIVE CORRECTIONS
SPECTRA
SU GROUPS
SU-2 GROUPS
SYMMETRY BREAKING
SYMMETRY GROUPS
U GROUPS
U-1 GROUPS
UNIFIED GAUGE MODELS
VACUUM STATES