Steps towards NNLO QCD calculations: collinear factorization at O(alpha(2)(s))

Authors
Grazzini, M
Citation
M. Grazzini, Steps towards NNLO QCD calculations: collinear factorization at O(alpha(2)(s)), NUCL PH B-P, 79, 1999, pp. 441-443
Citations number
10
Categorie Soggetti
Physics
Journal title
NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS
ISSN journal
09205632 → ACNP
Volume
79
Year of publication
1999
Pages
441 - 443
Database
ISI
SICI code
0920-5632(199910)79:<441:STNQCC>2.0.ZU;2-M
Abstract
I consider the singular behaviour of tree-level QCD amplitudes when the mom enta of three partons become simultaneously parallel and I discuss the univ ersal factorization formula that controls the singularities of the multipar ton matrix elements in this collinear limit.