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Multiplicities of charged pions and kaons from semi-inclusive deep-inelastic scattering by the proton and the deuteron
Multiplicities in semi-inclusive deep-inelastic scattering are presented for each charge state of pi(+/-) and K-+/- mesons. The data were collected by the HERMES experiment at the HERA storage ringExpand
Observation of the naive-T-odd Sivers effect in deep-inelastic scattering.
Azimuthal single-spin asymmetries of leptoproduced pions and charged kaons were measured on a transversely polarized hydrogen target. Evidence for a naive-T-odd, transverse-momentum-dependent partonExpand
Effects of transversity in deep-inelastic scattering by polarized protons
Abstract Single-spin asymmetries for pions and charged kaons are measured in semi-inclusive deep-inelastic scattering of positrons and electrons off a transversely nuclear-polarized hydrogen target.Expand
Single-spin asymmetries in semi-inclusive deep-inelastic scattering on a transversely polarized hydrogen target.
Single-spin asymmetries for semi-inclusive electroproduction of charged pions in deep-inelastic scattering of positrons are measured for the first time with transverse target polarization. TheExpand
The HERMES dual-radiator ring imaging Cherenkov detector
Abstract The construction and use of a dual radiator Ring Imaging Cherenkov (RICH) detector is described. This instrument was developed for the HERMES experiment at DESY which emphasises measurementsExpand
Measurement of the tensor structure function b1 of the deuteron.
The Hermes experiment has investigated the tensor spin structure of the deuteron using the 27.6 GeV/c positron beam of DESY HERA. The use of a tensor-polarized deuteron gas target with only aExpand
The OLYMPUS experiment
OLYMPUS is an experiment mounted by an international collaboration at DESY, Hamburg, Germany to provide a ±1% measurement of the cross section ratio of positron-proton to electron-proton elasticExpand
Azimuthal distributions of charged hadrons, pions, and kaons produced in deep-inelastic scattering off unpolarized protons and deuterons
The azimuthal cos phi and cos2 phi modulations of the distribution of hadrons produced in unpolarized semi-inclusive deep-inelastic scattering of electrons and positrons off hydrogen and deuteriumExpand
Transverse target single-spin asymmetry in inclusive electroproduction of charged pions and kaons
Single-spin asymmetries were investigated in inclusive electroproduction of charged pions and kaons from transversely polarized protons at the HERMES experiment. The asymmetries were studied as aExpand
Inclusive measurements of inelastic electron and positron scattering from unpolarized hydrogen and deuterium targets
Results of inclusive measurements of inelastic electron and positron scattering from unpolarized protons and deuterons at the HERMES experiment are presented. The structure functions F2p and F2d areExpand