Exclusive electroproduction revisited: Treating kinematical effects

Andrei Belitsky, D. Müller

Research output: Contribution to journalArticle

33 Scopus citations

Abstract

Generalized parton distributions of the nucleon are accessed via exclusive leptoproduction of the real photon. While earlier analytical considerations of phenomenological observables were restricted to twist-three accuracy, i.e., taking into account only terms suppressed by a single power of the hard scale, in the present study we revisit this differential cross section within the helicity formalism and restore power-suppressed effects stemming from the process kinematics exactly. We restrict ourselves to the phenomenologically important case of lepton scattering off a longitudinally polarized nucleon, where the photon flips its helicity at most by one unit.

Original languageEnglish (US)
Article number074010
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume82
Issue number7
DOIs
StatePublished - Oct 8 2010

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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