t-channel approach to Reggeon interactions in QCD

Starting from the multi-Regge effective action for high-energy scattering in QCD a t-channel approach can be developed which is similar to the approach by White based on general Regge arguments. The Balitsky-Fadin-Kuraev-Lipatov (BFKL) kernel of Reggeized gluon interaction, contributions to the 2→4 Reggeized gluon vertex function, and the one-loop correction to the BFKL kernel are considered. The conditions are discussed under which this approach can provide a simple estimate of the next-to-leading logarithmic corrections to the BFKL perturbative Pomeron intercept. copyright 1996 The American Physical Society