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Gauge invariance of DVCS off an arbitrary spin hadron: the deuteron target case

  • I. V. AnikinEmail author
  • R. S. Pasechnik
  • B. Pire
  • O. V. Teryaev
Regular Article - Theoretical Physics

Abstract

We study the deeply virtual Compton scattering off a spin-one particle, as the case for the coherent scattering off a deuteron target. We extend our approach, formulated initially for a spinless case, and discuss the role of twist three contributions for restoring the gauge invariance of the amplitude. Using twist three contributions and relations, which emanate from the QCD equations of motion, we derive the gauge invariant amplitude for the deeply virtual Compton scattering (DVCS) off hadrons with spin 1. Using the derived gauge invariant amplitude, the single spin asymmetry is discussed.

Keywords

Gauge Invariance Deeply Virtual Compton Scattering Single Spin Asymmetry Born Level Deuteron Target 
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.

Notes

Acknowledgements

The authors would like to thank A.V. Efremov, G. Ingelman, D. Ivanov, L. Szymanowski, S. Wallon for useful discussions and comments. This work is supported in part by the DFG project BR2021/6-1, the RFBR (grants 09-02-01149, 11-02-01454) and by the Carl Trygger Foundation (Sweden).

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Copyright information

© Springer-Verlag / Società Italiana di Fisica 2012

Authors and Affiliations

  • I. V. Anikin
    • 1
    • 2
    Email author
  • R. S. Pasechnik
    • 3
  • B. Pire
    • 4
  • O. V. Teryaev
    • 2
  1. 1.Institute for Theoretical PhysicsUniversity of RegensburgRegensburgGermany
  2. 2.Bogoliubov Laboratory of Theoretical PhysicsJINRDubnaRussia
  3. 3.Department of Astronomy and Theoretical PhysicsLund UniversityLundSweden
  4. 4.CPHT, École PolytechniqueCNRSPalaiseauFrance

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