Fermion and weak-boson masses in a composite model

Journal Article · Sun Jul 01 00:00:00 EDT 1984 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.30.163· OSTI ID:6402510

Margolis, B; Mendel, R R

In a model where quarks and leptons are fermion-boson composites we show that a realistic mass spectrum and flavor mixing can be obtained in a natural way. A metacolor SU(n)/sub MC/ gauge interaction, which is supposed to confine at a scale ..lambda../sub MC/approx.2 TeV is responsible for the binding. The elementary fermions carry all the SU(2)/sub L/ x U(1)/sub Y/ x SU(3)/sub C/ quantum numbers, while the number N of different elementary scalars determines the number of light composite families. The 't Hooft anomaly conditions impose the constraint n = N. The light fermions acquire their masses through transitions to quasistable excited states of mass Mapprox. =..lambda../sub MC/, which are mediated by the SU(2)/sub L/ x U(1)/sub Y/ x SU(3)/sub C/ interactions. The neutrinos remain massless. The weak bosons W/sup + -/,Z/sup 0/ obtain their masses through the Schwinger mechanism. The main contribution to these masses comes from the coupling to the quasistable fermionic excited states. The successful lowest-order prediction of the standard model, M/sub W/ = M/sub Z/costheta/sub W/, is also obtained here. No new particles or processes that are forbidden by current phenomenology are expected.

• Research Organization: Physics Department, McGill University, 3600 University Street, Montreal, Quebec, Canada H3A 2T8
• OSTI ID: 6402510
• Journal Information: Phys. Rev. D; (United States), Vol. 30:1
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
FERMIONS
COMPOSITE MODELS
MASS SPECTRA
INTERMEDIATE BOSONS
CHIRAL SYMMETRY
FLAVOR MODEL
GAUGE INVARIANCE
HIGGS MODEL
LEPTONS
MASSLESS PARTICLES
NEUTRINOS
QUANTUM NUMBERS
QUARK MODEL
SU-2 GROUPS
SU-3 GROUPS
SYMMETRY BREAKING
U-1 GROUPS
YUKAWA POTENTIAL
BOSONS
ELEMENTARY PARTICLES
INVARIANCE PRINCIPLES
LIE GROUPS
MATHEMATICAL MODELS
NUCLEAR POTENTIAL
PARTICLE MODELS
POSTULATED PARTICLES
POTENTIALS
SPECTRA
SU GROUPS
SYMMETRY
SYMMETRY GROUPS
U GROUPS
645201* - High Energy Physics- Particle Interactions & Properties-Theoretical- General & Scattering Theory