Two-loop Feynman-gauge calculation of the meson nonsinglet evolution potential

Recently, three independent determinations of the two-loop meson nonsinglet evolution potential have been completed. Two of them are an explicit light-cone-gauge calculation while the third is a less direct evaluation based on conformal symmetry. However, all three calculations disagree in the C/sub F/ 2 term. In this paper I present the results of a Feynman-gauge evaluation of Gegenbauer matrix elements (V2)/sub mj/ of the C/sub F/ 2 part of the two-loop meson nonsinglet evolution potential. The results confirm one of the light-cone-gauge calculations