  We analyse the azimuthal decorrelation of Mueller-Navelet dijets produced in
the collisions at Tevatron energies using a BFKL framework which incorporates
dominant subleading effects. We show that these effects significantly reduce
the decorrelation yet they are still insufficient to give satisfactory
description of experimental data. However a good description of the data is
obtained after incorporating within formalism the effective rapidity defined by
Del Duca and Schmidt.
