DIJET PRODUCTION AT HADRON-HADRON COLLIDERS IN THE BALITSKII-FADIN-KURAEV-LIPATOV APPROACH

The production in high-energy hadron collisions of a pair of jets with large rapidity separation is studied in an improved Balitskii-Fadin-K uraev-Lipatov (BFKL) formalism. By recasting the analytic solution of the BFKL equation as an explicit order-by-order sum over emitted gluon s, the effects of phase space constraints and the running coupling are studied. Particular attention is paid to the azimuthal angle decorrel ation of the jet pair. The inclusion of subleading effects significant ly improves the agreement between the theoretical predictions and rece nt preliminary measurements from the D0 Collaboration.