Longitudinal double-spin asymmetries in semi-inclusive deep-inelastic scattering of electrons and positrons by protons and deuterons

Abstract

A comprehensive collection of results on longitudinal double-spin asymmetries is presented for charged pions and kaons produced in semi-inclusive deep-inelastic scattering of electrons and positrons on the proton and deuteron, based on the full HERMES data set. The dependence of the asymmetries on hadron transverse momentum and azimuthal angle extends the sensitivity to the flavor structure of the nucleon beyond the distribution functions accessible in the collinear framework. No strong dependence on those variables is observed. In addition, the hadron charge-difference asymmetry is presented, which under certain model assumptions provides access to the helicity distributions of valence quarks.

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Cited by in corpus (6)

• Polarized semi-inclusive deep-inelastic scattering at NNLO in QCD
• First Extraction of Transverse Momentum Dependent Helicity Distributions
• Estimation of circular statistics in the presence of measurement bias
• Probing nucleon spin structure in deep-inelastic scattering, proton-proton collisions and Drell-Yan processes
• Toward Precision Helicity PDFs from Global DIS and SIDIS Fits with Projected EIC Measurements
• Kotzinian-Mulders effect in semi-inclusive DIS within TMD factorization