Universality of single spin asymmetries in hard processes. Cedran Bomhof and Piet Mulders ... Through TMD distribution and fragmentation functions to transverse ...
QCD is the theory underlying the strong interactions and the ... isospin, strangeness. baryon number. Mp Mn 940 MeV. Qp = 1, Qn = 0. s = gp 5.59, gn -3.83 ...
Quark and ... Results directly reflect quark, antiquark and gluon distributions ... limits us to hadrons as quark sources' or targets' These involve nucleon ...
In collinear cross section. In azimuthal asymmetries. pictures? Color gauge invariance ... insertions of gluons collinear with parton 1 are possible at many places ...