Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-09-05
JHEP 0702:013,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
20 pages Latex, replaced with revised, slightly extended published version
Scientific paper
10.1088/1126-6708/2007/02/013
One-loop amplitudes are to a large extent determined by their unitarity cuts in four dimensions. We show that the remaining rational terms can be obtained from the ultraviolet behaviour of the amplitude, and determine universal form factors for these rational parts by applying reduction techniques to the Feynman diagrammatic representation of the amplitude. The method is valid for massless and massive internal particles. We illustrate this method by evaluating the rational terms of the one-loop amplitudes for gg --> H, the 4-photon and 4-gluon amplitude, the amplitude for 2 photons plus 3 gluons and the 6-photon amplitude.
Binoth Thomas
Guillet J.-Ph.
Heinrich Georg
No associations
LandOfFree
Algebraic evaluation of rational polynomials in one-loop amplitudes does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Algebraic evaluation of rational polynomials in one-loop amplitudes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Algebraic evaluation of rational polynomials in one-loop amplitudes will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-418409