T -odd proton-helicity asymmetry in semi-inclusive DIS in perturbative QCD

URN to cite this document:: urn:nbn:de:bvb:355-epub-536224
DOI to cite this document:: 10.5283/epub.53622

Abele, Maurizio ; Aicher, Matthias ; Piacenza, Fulvio ; Schäfer, Andreas ; Vogelsang, Werner

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Date of publication of this fulltext: 24 Jan 2023 10:15

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Abstract

We compute the single-spin asymmetry AUL in semi-inclusive deep-inelastic scattering of unpolarized leptons and longitudinally polarized protons at a large transverse momentum of the produced hadron. Our calculation is performed in collinear factorization at the lowest order of QCD perturbation theory. For photon exchange, the asymmetry is T-odd and receives contributions from the interference of ...