How do constituent quarks arise in QCD? Perturbation theory and the infra-red

Details How do constituent quarks arise in QCD? Perturbation theory and the infra-red How do constituent quarks arise in QCD? Perturbation theory and the infra-red

1996-09-12

arxiv.org/abs/hep-ph/9609333v1

Nucl.Phys.Proc.Suppl. 54A (1997) 208-212

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, espcrc2.sty required, talk given at QDC-96, Montpellier, July 1996, A related simulation may be found at http://www.i

Scientific paper

10.1016/S0920-5632(97)00042-X

We motivate the use of dressed charges by arguing that such objects are needed to describe, e.g., constituent quarks and, in general, physical charged states in gauge theories. We give a short introduction to dressings in both QED and QCD. We put special emphasis on the infra-red properties of a moving dressed charge. To be more precise, we demonstrate that the one loop propagator of a relativistic dressed charge can be renormalized in the mass shell scheme with no infra-red divergence showing up.

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