Resummation of target mass corrections in two-photon processes: Twist-two sector

A. V. Belitsky, D. Müller

Research output: Contribution to journalArticle

29 Scopus citations

Abstract

We develop a formalism for the resummation of target mass corrections in off-forward two-photon amplitudes given by a chronological product of electromagnetic currents, arising in, e.g., deeply virtual Compton scattering. The method is based on a relation of composite operators with a definite twist to harmonic tensors, which form an irreducible representation of the Lorentz group. We give an application of the framework for the matrix elements of twist-two operators.

Original languageEnglish (US)
Pages (from-to)173-182
Number of pages10
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume507
Issue number1-4
DOIs
StatePublished - May 17 2001
Externally publishedYes

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Keywords

  • Double distributions
  • Harmonic tensors
  • Skewed parton distributions
  • Target mass corrections
  • Two-photon processes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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