Pole decomposition of BFKL eigenvalue at zero conformal spin and the real part of digamma function

Mohammad Joubat, Claudelle Capasia Madjuogang Sandeu, Alex Prygarin

We consider the powers of leading order eigenvalue of the Balitsky-Fadin-Kuraev-Lipatov~(BFKL) equation at zero conformal spin. Using reflection identities of harmonic sums we demo…