Built 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. The result can be used to extract transverse-momentum dependent parton distribution and fragmentation functions from relevant experimental data.
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Ji et al. (2004) studied this question.
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