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

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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


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 ...


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