Gauge invariance and QCD twist-3 factorization for single spin asymmetries
Crossref DOI link: https://doi.org/10.1007/JHEP02(2015)163
Published Online: 2015-02-25
Published Print: 2015-02
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Ma, J. P.
Zhang, G. P.