  Radiative corrections to QCD amplitudes in the quasi-multi-Regge kinematics
are interesting in particular since the Reggeized form of these amplitudes is
used in the derivation of the NLO BFKL. This form is a hypothesis which must be
at least carefully checked, if not proved. We calculate the radiative
corrections in the one-loop approximation using the s-channel unitarity.
Compatibility of the Reggeized form of the amplitudes with the s-channel
unitarity requires fulfillment of the set of nonlinear equations for the
Reggeon vertices. We show that these equations are satisfied.

High Energy Physics - Phenomenology