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Cross-channel analysis of quark and gluon generalized parton distributions with helicity flip

  • B. Pire
  • K. Semenov-Tian-ShanskyEmail author
  • L. Szymanowski
  • S. Wallon
Regular Article - Theoretical Physics

Abstract

Quark and gluon helicity flip generalized parton distributions (GPDs) address the transversity quark and gluon structure of the nucleon. In order to construct a theoretically consistent parametrization of these hadronic matrix elements, we work out the set of combinations of those GPDs suitable for the SO(3) partial wave (PW) expansion in the cross-channel. This universal result will help to build up a flexible parametrization of these important hadronic non-perturbative quantities, using, for instance, the approaches based on the conformal PW expansion of GPDs such as the Mellin-Barnes integral or the dual parametrization techniques.

Keywords

Partial Wave Deeply Virtual Compton Scattering Hadronic Matrix Element Generalize Parton Distribution Partial Wave Expansion 
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.

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Copyright information

© SIF, Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • B. Pire
    • 1
  • K. Semenov-Tian-Shansky
    • 2
    Email author
  • L. Szymanowski
    • 3
  • S. Wallon
    • 4
    • 5
  1. 1.CPhT, École PolytechniqueCNRSPalaiseauFrance
  2. 2.IFPA, Département AGOUniversité de LiègeLiègeBelgium
  3. 3.National Centre for Nuclear Research (NCBJ)WarsawPoland
  4. 4.LPTUniversité de Paris-Sud, CNRSOrsayFrance
  5. 5.UPMCUniversité Paris 06, Faculté de PhysiqueParisFrance

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