[en] 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
Disciplines :
Physics
Author, co-author :
Pire, Bernard
Semenov-Tyan-Shanskiy, Kirill ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Inter. fondamentales en physique et astrophysique (IFPA)
Szymanowski, Lech
Wallon, Samuel
Language :
English
Title :
Cross-channel analysis of quark and gluon generalized parton distributions with helicity flip