Quark-antiquark contribution to the BFKL kernel

Abstract

The quark-antiquark contribution to the BFKL kernel is calculated. Using the effective vertex for the $q\bar{q}$ pair production in the Reggeon-Reggeon collision we find this contribution by integrating the square of this vertex over relative transverse momenta and fractions of longitudinal momenta of produced particles.

Comments: 12 pages, Latex