A two-loop four-gluon helicity amplitude in QCD

Authors
Bern, Z Dixon, L Kosower, DA
Citation
Z. Bern et al., A two-loop four-gluon helicity amplitude in QCD, J HIGH EN P, 2000(1), 2000, pp. NIL_563-NIL_592
Citations number
45
Categorie Soggetti
Physics
Journal title
JOURNAL OF HIGH ENERGY PHYSICS
ISSN journal
10298479 → ACNP
Volume
2000
Issue
1
Year of publication
2000
Pages
NIL_563 - NIL_592
Database
ISI
SICI code
1029-8479(200001)2000:1<NIL_563:ATFHAI>2.0.ZU;2-L
Abstract
We present the two-loop pure gauge contribution to the gluon-gluon scatteri ng amplitude with maximal helicity violation. Our construction of the ampli tude does not rely directly on Feynman diagrams, but instead uses its analy tic properties in 4 - 2 epsilon dimensions. We evaluate the loop integrals appearing in the amplitude through O(epsilon (0)) in terms of polylogarithm s.