Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-09-25
JHEP 0103:016,2001
Physics
High Energy Physics
High Energy Physics - Phenomenology
11 pages, 2 figures; v2: comments and references added, results unchanged
Scientific paper
10.1088/1126-6708/2001/03/016
We address the problem of decomposing graphs in perturbative QCD into terms associated with particular regions. Motivated by asking how to incorporate next-to-leading order (NLO) QCD corrections in parton-shower algorithms, we require that: (a) The integrand for the hard part is to be integrable even if the corrections are applied to a process that is not infrared and collinear safe. (b) The splitting between the terms should be defined gauge-invariantly. (c) The dependence on cut-offs should obey homogeneous evolution equations. In the context of one-gluon-emission graphs for deep inelastic scattering, we explain a subtractive technique that is based on gauge-invariant Wilson-line operators. Appropriate organization of subtractions involving the soft region allows a connection to previous work where evolution equations with respect to the directions of the Wilson lines have been derived.
Collins John C.
Hautmann Francesco
No associations
LandOfFree
Soft gluons and gauge-invariant subtractions in NLO parton-shower Monte Carlo event generators 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 Soft gluons and gauge-invariant subtractions in NLO parton-shower Monte Carlo event generators, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Soft gluons and gauge-invariant subtractions in NLO parton-shower Monte Carlo event generators will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-605559