Abstract
Hard exclusive production in deep inelastic lepton scattering provides access to the unknown Generalized Parton Distributions (GPDs) of the nucleon. At HERMES, the unpolarized total cross section for hard exclusive π+ production have been measured with a 27.6 GeV positron beam on an internal hydrogen gas target. First preliminary results for 1.5<Q2<10.5 GeV 2 and for 0.02<x<0.8 are presented and compared to GPD calculations. Forthcoming measurement for the single-spin asymmetry using a transversally polarized target is also reported.
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