The azimuthal decorrelation of jets widely separated in rapidity as a test of the BFKL kernel

摘要

We study the decorrelation in azimuthal angle of Mueller-Navelet jets athadron colliders within the BFKL formalism. We introduce NLO terms in theevolution kernel and present a collinearly-improved version of it for allconformal spins. We show how this further resummation has good convergenceproperties and is closer to the Tevatron data than a simple LO treatment.However, we are still far from a good fit. We offer estimates of thesedecorrelations for larger rapidity differences which should favor the onset ofBFKL effects and encourage experimental studies of this observable at the LHC.