Gauge invariance of fermion masses in extended-technicolor theories

It has recently been argued that, in technicolor theories, large quark and lepton masses can arise if the extended-technicolor (ETC) interactions play an important direct role in chiral-symmetry breaking. This happens when the ETC coupling is sufficiently close to a critical value. The analysis that...

Full description

Saved in:
Bibliographic Details
Published in:Physical review. D, Particles and fields Particles and fields, 1991-02, Vol.43 (3), p.R646-R650
Main Authors: APPELQUIST, T, MAHANTA, U, NASH, D, WIJEWARDHANA, L. C. R
Format: Article
Language:English
Subjects:
645300 - High Energy Physics- Particle Invariance Principles & Symmetries
645400 - High Energy Physics- Field Theory
CHIRAL SYMMETRY
Classical and quantum physics: mechanics and fields
COLOR MODEL
COMPOSITE MODELS
COUPLING
ELEMENTARY PARTICLES
ENERGY
Exact sciences and technology
FERMIONS
FUNCTIONS
GAUGE INVARIANCE
HIGGS MODEL
INVARIANCE PRINCIPLES
LADDER APPROXIMATION
LEPTONS
MASS
MATHEMATICAL MODELS
PARTICLE MODELS
Physics
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
POSTULATED PARTICLES
PROPAGATOR
QUARK MODEL
QUARKS
RENORMALIZATION
SELF-ENERGY
STANDARD MODEL
SYMMETRY
SYMMETRY BREAKING
UNIFIED GAUGE MODELS
WAVE FUNCTIONS
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:It has recently been argued that, in technicolor theories, large quark and lepton masses can arise if the extended-technicolor (ETC) interactions play an important direct role in chiral-symmetry breaking. This happens when the ETC coupling is sufficiently close to a critical value. The analysis that led to these conclusions was based on the study of the renormalization-group-improved ladder Dyson-Schwinger equation. In this paper we investigate the gauge invariance of this ETC-driven fermion-mass enhancement. We show that the critical curve in the ETC, technicolor coupling plane, separating the symmetric and symmetry-breaking phases, is gauge invariant. We then show that the same is true for fermion-mass enhancement.
ISSN:0556-2821
1089-4918
DOI:10.1103/PhysRevD.43.R646