## Abstract

The exclusive electroproduction of π^{+} mesons was studied with the HERMES spectrometer at the DESY laboratory by scattering 27.6 GeV positron and electron beams off an internal hydrogen gas target. The virtual-photon cross sections were measured as a function of the Mandelstam variable t and the squared four momentum - Q^{2} of the exchanged virtual photon. A model calculation based on Generalized Parton Distributions is in fair agreement with the data at low values of | t | if power corrections are included. A model calculation based on the Regge formalism gives a good description of the magnitude and the t and Q^{2} dependences of the cross section.

Original language | English (US) |
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Pages (from-to) | 486-492 |

Number of pages | 7 |

Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |

Volume | 659 |

Issue number | 3 |

DOIs | |

State | Published - Jan 24 2008 |

## ASJC Scopus subject areas

- Nuclear and High Energy Physics

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