Toward modelization of quark and gluon transversity generalized parton distributions

B. Pire (1) , K. Semenov-Tian-Shansky (2) , L. Szymanowski (3) , S. Wallon (4, 5)

1 CPHT - Centre de Physique Théorique [Palaiseau]
2 IFPA - Interactions Fondamentales en Physique et en Astrophysique
3 NCBJ - National Center for Nuclear Research [Warsaw]
4 LPT - Laboratoire de Physique Théorique d'Orsay [Orsay]
5 UPMC - Université Pierre et Marie Curie - Paris 6

Quark and gluon helicity flip generalized parton distributions (GPDs) encode the information on the nucleon structure in the transversity sector. In order to build a theoretically consistent phenomenological parametrization for these hadronic matrix element within the framework of the dual parametrization of GPDs (or with the equivalent approach of the SO(3) partial waves (PW) expansion with the Mellin-Barnes integral techniques) we establish the set of combinations of parton helicity flip GPDs suitable for the expansion in the cross channel SO(3) PWs.

Domaines: Physique des Hautes Energies - Expérience [hep-ex]; Physique des Hautes Energies - Phénoménologie [hep-ph]; Physique Nucléaire Expérimentale [nucl-ex]; Physique Nucléaire Théorique [nucl-th]

B. Pire, K. Semenov-Tian-Shansky, L. Szymanowski, S. Wallon. Toward modelization of quark and gluon transversity generalized parton distributions. 2014. ⟨hal-01044659⟩