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Single target-spin asymmetries in semi-inclusive pion electroproduction on longitudinally polarized protons

A. M. Kotzinian, K. A. Oganessyan, H. R. Avakian, E. De Sanctis

hep-pharXiv:hep-ph/9908466

Abstract

We evaluate the single target-spin sin(phih) and sin(2ϕh) azimuthal asymmetries in the semi-inclusive deep inelastic lepton scattering off longitudinally polarized proton target under HERMES kinematic conditions. A good agreement with the HERMES data can be achieved using only the twist-2 distribution and fragmentation functions.

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