The final state hadrons in polarized deep inelastic scattering

The final state hadrons in polarised deep inelastic scattering

General arguments suggest that the non-perturbative background field in QCD may have a non-trivial spin structure. We discuss how this effect may be manifest in semi-inclusive measurements of fast pions in polarised deep inelastic scattering.

Final State Hadrons in Deep Inelastic Processes and Colliding Beams*

Scheme Dependence in Polarized Deep Inelastic Scattering

We study the effect of scheme dependence upon the NLO QCD analysis of the world data on polarized DIS. The reliability of an analysis at NLO is demonstrated by the consistency of our polarized densities with the NLO transformation rules relating them to each other. We stress the importance of the chiral JET scheme in which all the hard effects are consistently absorbed in the Wilson coefficient...

Polarized Deep Inelastic Diffractive Scattering near the Light Cone

Inclusive unpolarized and polarized deeply inelastic diffractive scattering at high energies and momentum transfer is one of the important processes in lepton–nucleon scattering. As found by experiment, cf. [1], there are interesting relations between the cross sections of these processes and those of inclusive deeply inelastic scattering: i) the scaling violations of both processes are quite s...

Polarized J/ψ production in deep inelastic scattering at HERA

We perform a calculation on the polarization of J/ψ production in deep inelastic scattering in the HERA energy range. For the inclusive production distributions, we find that the color-singlet contributions are consistent with the experimental data in the major region of z (z > 0.4). Only in low z regions, there are some hints of the need of the color-octet contributions to describe the experim...