Construction of nonlocal light-cone operators with definite twist

Abstract

A systematic procedure is introduced to uniquely decompose nonlocal LC-operators into harmonic operators of well defined geometric twist. The method will be demonstrated for (pseudo)scalar, (axial) vector and skew tensor bilocal quark light-ray operators

Comments: 4 pages, AMSTeX, Contribution to 7th Int. Workshop on Deep Inelastic Scatterin and QCD, Zeuthen, April 1999 change of formulas 25 and 26