http://hal.in2p3.fr/in2p3-00992880Kanazawa, K.K.KanazawaLorcé, C.C.LorcéIPNO - Institut de Physique Nucléaire d'Orsay - UP11 - Université Paris-Sud - Paris 11 - IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS - CNRS - Centre National de la Recherche ScientifiqueMetz, A.A.MetzPasquini, B.B.PasquiniSchlegel, M.M.SchlegelTwist-2 generalized transverse-momentum dependent parton distributions and the spin/orbital structure of the nucleonHAL CCSD2014[PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex][PHYS.HPHE] Physics [physics]/High Energy Physics - Phenomenology [hep-ph]Heurteau, Sophie2014-05-19 14:07:102020-09-16 16:08:322014-05-20 10:05:34enJournal articles10.1103/PhysRevD.90.0140281Generalized transverse-momentum dependent parton distributions (GTMDs) encode the most general parton structure of hadrons. Here we focus on two twist-2 GTMDs which are denoted by $F_{1,4}$ and $G_{1,1}$ in parts of the literature. As already shown previously, both GTMDs have a close relation to orbital angular momentum of partons inside a hadron. However, recently even the mere existence of $F_{1,4}$ and $G_{1,1}$ has been doubted. We explain why this claim does not hold. We support our model-independent considerations by calculating the two GTMDs in the scalar diquark model and in the quark-target model, where we also explicitly check the relation to orbital angular momentum. In addition, we compute $F_{1,4}$ and $G_{1,1}$ at large transverse momentum in perturbative Quantum Chromodynamics and show that they are nonzero.