QCD Factorization for Spin-Dependent Cross Sections in DIS and Drell-Yan   Processes at Low Transverse Momentum
  Based on a recent work on the quantum chromodynamic (QCD) factorization for semi-inclusive deep-inelastic scattering (DIS), we present a set of factorization formulas for the spin-dependent DIS and Drell-Yan cross sections at low transverse momentum. 
Xiangdong Ji, Jian-Ping Ma, Feng Yuan