DIAGRAMMATIC ANALYSIS OF QCD GAUGE TRANSFORMATIONS AND GAUGE CANCELLATIONS
High Energy Physics - Phenomenology
2016-09-01 v1 High Energy Physics - Theory
Abstract
Diagrammatic techniques are invented to implement QCD gauge transformations. These techniques can be used to discover how gauge-dependent terms are cancelled among diagrams to yield gauge-invariant results in the sum. In this way a multiloop pinching technique can be developed to change ordinary vertices into background-gauge vertices. The techniques can also be used to design new gauges to simplify calculations by reducing the number of gauge-dependent terms present in the intermediate steps. Two examples are discussed to illustrate this aspect of the applications.
Keywords
Cite
@article{arxiv.hep-ph/9503311,
title = {DIAGRAMMATIC ANALYSIS OF QCD GAUGE TRANSFORMATIONS AND GAUGE CANCELLATIONS},
author = {Y. J. Feng and C. S. Lam},
journal= {arXiv preprint arXiv:hep-ph/9503311},
year = {2016}
}
Comments
Latex, with 40 diagrams in a uuencoded postscript file. 27 pages in total.