On the transverse momentum in Z-boson production in a virtuality ordered parton shower - High Energy Physics - PhenomenologyReport as inadecuate




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Abstract: Cross sections for physical processes that involve very different momentumscales in the same process will involve large logarithms of the ratio of themomentum scales when calculated in perturbation theory. One goal ofcalculations using parton showers is to sum these large logarithms. We askwhether this goal is achieved for the transverse momentum distribution of aZ-boson produced in hadron-hadron collisions when the shower is organized withhigher virtuality parton splittings coming first, followed successively bylower virtuality parton splittings. We find that the virtuality ordered showerworks well in reproducing the known QCD result.



Author: Zoltan Nagy, Davison E. Soper

Source: https://arxiv.org/



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