645 citations · 5.2k across the 89 of their papers we have counts for
Showing 2004Show all
3 papers · 1 filter
hep-ph2004
Present understanding of the nucleon spin structure
A. Metz
The present understanding of the spin structure of the nucleon is briefly reviewed. The main focus is on parton helicity distributions, orbital angular momentum of partons as defin…
hep-ph2004★ 360 cited
Universality of soft and collinear factors in hard-scattering factorization
John C. Collins, Andreas Metz
Universality in QCD factorization of parton densities, fragmentation functions, and soft factors is endangered by the process dependence of the directions of Wilson lines in their…
hep-ph2004★ 4 cited
On the validity of Lorentz invariance relations between parton distributions
M. Schlegel, A. Metz
Lorentz invariance relations connecting twist-3 parton distributions with transverse momentum dependent twist-2 distributions have been proposed previously. These relations can be…