Correlations in double parton distributions: effects of evolution

Abstract

We numerically investigate the impact of scale evolution on double parton distributions, which are needed to compute multiple hard scattering processes. Assuming correlations between longitudinal and transverse variables or between the parton spins to be present at a low scale, we study how they are affected by evolution to higher scales, i.e. by repeated parton emission. We find that generically evolution tends to wash out correlations, but with a speed that may be slow or fast depending on kinematics and on the type of correlation. Nontrivial parton correlations may hence persist in double parton distributions at the high scales relevant for hard scattering processes.

35 pages, 24 figures; v2: small corrections and improvements

References in corpus (11)

• Parton distributions for the LHC
• QCDNUM: Fast QCD Evolution and Convolution
• Dynamical parton distributions of the nucleon and very small-x physics
• Theoretical considerations on multiparton interactions in QCD
• The four jet production at LHC and Tevatron in QCD
• Direct Probes of Linearly Polarized Gluons inside Unpolarized Hadrons
• Double Parton Scattering Singularity in One-Loop Integrals
• Double Parton Correlations in the Bag Model
• Valence double parton distributions of the nucleon in a simple model
• Angular correlations in the double Drell-Yan process
• Some numerical studies of the evolution of generalized parton distributions

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