Investigation of single spin asymmetries in pi^{+} electroproduction

Details Investigation of single spin asymmetries in pi^{+} electroproduction Investigation of single spin asymmetries in pi^{+} electroproduction

2000-10-22

arxiv.org/abs/hep-ph/0010261v1

Nucl.Phys. A689 (2001) 784-792

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages with 4 figures, LaTeX

Scientific paper

10.1016/S0375-9474(00)00609-6

The azimuthal single target-spin asymmetries for pi^{+} production in semi-inclusive deep inelastic scattering of leptons off longitudinally polarized protons are evaluated using two main approaches available in the literature. It is shown that the approximation where the twist-2 transverse quark spin distribution in the longitudinally polarized nucleon is small enough to be neglected leads to a consistent description of all existing asymmetries observed by the HERMES experiment.

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