On the dependence of QCD splitting functions on the choice of the evolution variable

S. Jadach 1 A. Kusina 2 W. Placzek M. Skrzypek 1
1 Institute of Nuclear Physics
2 LPSC - Laboratoire de Physique Subatomique et de Cosmologie
Abstract : We show that already at the NLO level the DGLAP evolution kernel Pqq starts to depend on the choice of the evolution variable. We give an explicit example of such a variable, namely the maximum of transverse momenta of emitted partons and we identify a class of evolution variables that leave the NLO Pqq kernel unchanged with respect to the known standard MS-bar results. The kernels are calculated using a modified Curci-Furmanski-Petronzio method which is based on a direct Feynman-graphs calculation.
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Article dans une revue
Journal of High Energy Physics, Springer Verlag (Germany), 2016, 2016 (8), pp.092. 〈10.1007/JHEP08(2016)092〉
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http://hal.in2p3.fr/in2p3-01334581
Contributeur : Emmanuelle Vernay <>
Soumis le : mardi 21 juin 2016 - 08:14:05
Dernière modification le : lundi 9 avril 2018 - 12:22:08

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S. Jadach, A. Kusina, W. Placzek, M. Skrzypek. On the dependence of QCD splitting functions on the choice of the evolution variable. Journal of High Energy Physics, Springer Verlag (Germany), 2016, 2016 (8), pp.092. 〈10.1007/JHEP08(2016)092〉. 〈in2p3-01334581〉

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