Investigation of the factorization scheme dependence of finite order perturbative QCD calculations

0375195 - FZÚ 2012 RIV US eng J - Článek v odborném periodiku
Kolář, Karel
Investigation of the factorization scheme dependence of finite order perturbative QCD calculations.
Journal of High Energy Physics. -, č. 11 (2011), 005/1-005/44. ISSN 1126-6708
Grant CEP: GA MŠMT LC527
Výzkumný záměr: CEZ:AV0Z10100502
Klíčová slova: QCD * parton distribution functions * factorization schemes * NLO Monte Carlo event generators
Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
Impakt faktor: 5.831, rok: 2011

The freedom associated with the definition of parton distribution functions is analyzed and formulae governing the dependence of parton distribution functions and hard scattering cross-sections on unphysical quantities associated with the renormalization and factorization procedure are derived. The issue of the specification of factorization schemes via the corresponding higher order splitting functions is discussed in detail. A numerical analysis of the practical applicability of the so called ZERO factorization scheme, which could be useful for the construction of consistent NLO Monte Carlo event generators, is presented.
Trvalý link: http://hdl.handle.net/11104/0207925