Off-shell Ward identities for N-gluon amplitudes
High Energy Physics - Theory
2020-08-26 v1 High Energy Physics - Phenomenology
Abstract
Off-shell Ward identities in non-abelian gauge theory continue to be a subject of active research, since they are, in general, inhomogeneous and their form depends on the chosen gauge-fixing procedure. For the three-gluon and four-gluon vertices, it is known that a relatively simple form of the Ward identity can be achieved using the pinch technique or, equivalently, the background-field method with quantum Feynman gauge. The latter is also the gauge-fixing underlying the string-inspired formalism, and here we use this formalism to derive the corresponding form of the Ward identity for the one-loop N - gluon amplitudes.
Cite
@article{arxiv.2001.00885,
title = {Off-shell Ward identities for N-gluon amplitudes},
author = {Naser Ahmadiniaz and Christian Schubert},
journal= {arXiv preprint arXiv:2001.00885},
year = {2020}
}