Transverse momentum dependent twist-three result for polarized Drell-Yan processes

Abstract

We study the polarized Drell-Yan processes from the collision of two spin-1/2 hadrons at order 1/Q based on the framework of transverse momentum dependent factorization.We give the complete twist-three results of total sixteen independent structure functions in terms of twist-two and twist-three transverse momentum dependent distribution functions.

Comments: typo corrected, comments and references added, to appear in PRD