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An attempt to understand exclusive π + electroproduction

  • S. V. Goloskokov
  • P. KrollEmail author
Regular Article - Theoretical Physics

Abstract

Hard exclusive π + electroproduction is investigated within the handbag approach. The prominent role of the pion-pole contribution is demonstrated. It is also shown that the experimental data require a twist-3 effect which ensues from the helicity-flip generalized parton distribution H T and the twist-3 pion wave function. The results calculated from this handbag approach are compared in detail with the experimental data on cross sections and spin asymmetries measured with a polarized target. It is also commented on consequences of this approach for exclusive π 0 and vector-meson electroproduction.

Keywords

Helicity Amplitude Valence Quark Spin Asymmetry Pion Form Factor Pion Pole 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag / Società Italiana di Fisica 2009

Authors and Affiliations

  1. 1.Bogoliubov Laboratory of Theoretical PhysicsJoint Institute for Nuclear ResearchDubnaRussia
  2. 2.Fachbereich PhysikUniversität WuppertalWuppertalGermany
  3. 3.Institut für Theoretische PhysikUniversität RegensburgRegensburgGermany

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