Twist-three observables in deeply virtual Compton scattering on the nucleon

A. V. Belitsky, A. Kirchner, D. Müller, A. Schäfer

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

We study twist-three effects in deeply virtual Compton scattering on an unpolarized spin-1/2 target. A careful definition of observables as Fourier moments w.r.t. the azimuthal angle allows for a clear separation of twist-two and -three effects. Although the latter are power suppressed, they give leading contributions to the twist-three asymmetries and do not affect the twist-two observables.

Original languageEnglish (US)
Pages (from-to)117-124
Number of pages8
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume510
Issue number1-4
DOIs
StatePublished - Jun 21 2001
Externally publishedYes

Keywords

  • Asymmetries
  • Deeply virtual Compton scattering
  • Generalized parton distribution
  • Twist-three contributions

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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