Impact Factors for Reggeon-Gluon Transitions

Abstract

General expressions for the impact factors up to terms vanishing at the space-time dimension $D\to 4$ are presented. Their infrared behaviour is analysed and calculation of exact in $D\to 4$ asymptotics at small momenta of Reggeized gluons is discussed.

Comments: 8 pages, Invited talk presented at the Summer School and Workshop on High Energy Physics at the LHC: New trends in HEP, October 21- November 6 2014, Natal, Brazil