No. 95 (00217, 00219)

Family name : Davydychev
Given name : Andrei
Affiliation : Institute for Nuclear Physics of Moscow State University
              and Schlumberger-SPC (Sugar Land, Texas, USA)
Abbreviation : 
E-mail address : davyd@thep.physik.uni-mainz.de
Title : Feynman diagrams in terms of angular variables and analytic 
        continuation
Authors : A.I. Davydychev and M.Yu. Kalmykov
Abstract : 
Studying higher terms of the epsilon-expansion of physically-relevant
Feynman diagrams, we explore the connection between terms of the
expansion of the corresponding hypergeometric functions and multiple
inverse binomial sums. In many cases, it is useful to get result in
terms of geometrical angular variables, and then continue it
analytically to get polylogarithms and their generalizat ions.