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Exclusive pi^+ production at HERMES

C. Hadjidakis·D. Hasch·E. Thomas
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Abstract

Hard exclusive production in deep inelastic lepton scattering provides access to the unknown Generalized Parton Distributions (GPDs) of the nucleon. At HERMES, different observables for hard exclusive pi^+ production have been measured with a 27.6 GeV positron beam on an internal hydrogen gas target. First preliminary results for the unpolarized ep->enpi^+ total cross section for 1.5<Q^2<10.5 GeV^2 and for 0.02<x<0.8 are presented and compared to GPD calculations. The final result for the single-spin asymmetry using a longitudinal polarized target is also reported.

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C. Hadjidakis, D. Hasch, E. Thomas. 2004-05-28. Exclusive pi^+ production at HERMES. https://doi.org/10.1142/s0217751x05021877

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