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hep-ph1996
Quark masses in Qiu's factorization procedure
D. Boer, R. D. Tangerman
We discuss a higher-twist factorization procedure of the hadron tensor in deep inelastic scattering, proposed by Qiu, and extend it to include quark mass terms. Its property that t…
hep-ph1995
Twist-three distributions and their appearance in the doubly-polarized Drell-Yan process
R. D. Tangerman, P. J. Mulders
The twist-three distributions and are defined as quark-field matrix elements between polarized hadron states. They can be written in terms of quark-mass and gluon…