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

K. A. Oganessyan·N. Bianchi·E. De Sanctis·W. -D. Nowak
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Abstract

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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K. A. Oganessyan, N. Bianchi, E. De Sanctis, W. -D. Nowak. 2000-10-22. Investigation of single spin asymmetries in pi^{+} electroproduction. https://doi.org/10.1016/s0375-9474(00)00609-6

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