Exclusive electroproduction revisited

Treating kinematical effects

Andrei Belitsky, D. Müller

Research output: Contribution to journalArticle

32 Citations (Scopus)

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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photons
partons
leptons
kinematics
formalism
cross sections
scattering

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Exclusive electroproduction revisited : Treating kinematical effects. / Belitsky, Andrei; Müller, D.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 82, No. 7, 074010, 08.10.2010.

Research output: Contribution to journalArticle

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