Paper
Double parton correlations versus factorized distributions
Authors
Abstract
Using the generalized Lipatov-Altarelli-Parisi-Dokshitzer equations for the two-parton distribution functions we show numerically that the dynamical correlations contribute to these functions quite a lot in comparison with the factorized components. At the scale of CDF hard process ( GeV) this contribution to the double gluon-gluon distribution is nearly 10% and increases right up to 30% at the LHC scale ( GeV) for the longitudinal momentum fractions accessible to these measurements. For the finite longitudinal momentum fractions the correlations are large right up to 90% in accordance with the predicted QCD asymptotic behaviour.