2018 Impact factor 4.843
Particles and Fields
Eur. Phys. J. C 5, 693-699
DOI 10.1007/s100529800877

The structure of the Bern-Kosower integrand
for the N-gluon amplitude

Christian Schubert1,2

1 High Energy Physics Division, Argonne National Laboratory, Argonne, IL 60439-4815, USA
2 Institut für Physik, Humboldt Universität zu Berlin, Invalidenstr. 110, D-10115 Berlin, Germany
(e-mail: schubert@qft2.physik.hu-berlin.de)

Received: 2 November 1997 / Published online: 24 March 1998

Abstract
An ambiguity inherent in the partial integration procedure leading to the Bern-Kosower rules is fixed in a way which preserves the complete permutation symmetry in the scattering states. This leads to a canonical version of the Bern-Kosower representation for the one-loop N-photon/gluon amplitudes, and to a natural decomposition of those amplitudes into permutation symmetric gauge invariant partial amplitudes. This decomposition exhibits a simple recursive structure.


Copyright Springer-Verlag