Jet-jet and hadron-jet correlations in hadro- and electro-production

Details Jet-jet and hadron-jet correlations in hadro- and electro-production Jet-jet and hadron-jet correlations in hadro- and electro-production

2008-07-14

arxiv.org/abs/0807.2133v1

Eur.Phys.J.C57:681-688,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX, 19 pages, 7 figures (9 figure files)

Scientific paper

10.1140/epjc/s10052-008-0731-2

We discuss, in the framework of perturbative QCD at next to leading order, two related observables which are usually considered to provide tests of the BFKL dynamics : jet-jet correlations at Tevatron energies and forward particle-jet correlations at HERA. In the first case we study the rapidity gap dependence of the azimuthal correlations and find slightly too strong correlations at large gap. In the second case we discuss the cross section as well as the azimuthal correlations over a rapidity gap range of 5 units. We find that the requirement of a forward particle imposes strong kinematical constraints which distort the distributions, notably at small rapidity gaps. We also show that the decorrelation is stronger in electroproduction than in hadron-hadron collisions. Unfortunately no data are yet available for comparison.

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