Double parton correlations versus factorized distributions

Details Double parton correlations versus factorized distributions Double parton correlations versus factorized distributions

2004-04-19

arxiv.org/abs/hep-ph/0404155v1

Phys.Lett. B594 (2004) 171-176

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 1 figure

Scientific paper

10.1016/j.physletb.2004.05.012

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 ($\sim 5$ GeV) this contribution to the double gluon-gluon distribution is nearly 10% and increases right up to 30% at the LHC scale ($\sim 100$ GeV) for the longitudinal momentum fractions $x \leq 0.1$ accessible to these measurements. For the finite longitudinal momentum fractions $x \sim 0.2 \div 0.4$ the correlations are large right up to 90% in accordance with the predicted QCD asymptotic behaviour.

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