Figure 1

Kinematics for GPDs.Reuse & Permissions

Figure 2

Kinematics for TMDs.Reuse & Permissions

Figure 3

Path of Wilson line for TMDs in SIDIS.Reuse & Permissions

Figure 4

(a) Lowest order diagram for T-odd TMDs in spectator model calculations containing the interaction of the active quark with the target remnant. The eikonal propagator arising from the Wilson line in the operator definition of TMDs is indicated by a double line. Note that only the imaginary part of the box diagram on the left-hand side (LHS) of the cut is relevant for the calculation of T-odd functions. The Hermitian conjugate diagram (h.c.) is not shown. (b) Lowest order diagram for GPDs in spectator model calculations. The topology of diagram (a) matches with the one of diagram (b) if the quark-spectator interaction, described by the lensing function ${\mathcal{I}}^{q,i}$, is factored out.Reuse & Permissions

Figure 5

(a) Particular higher order diagram for T-odd TMDs in spectator model calculations containing the interaction of the quark with the target remnants. (b) Topology of diagram (a) if the quark-spectator interaction is factored out. Diagram (b) cannot represent a Feynman graph for a GPD because there is a mismatch between the number of particles on the LHS and the RHS of the cut.Reuse & Permissions

Figure 6

Cut diagrams contributing to quark TMDs and GPDs in the scalar diquark model: (a) diagram for T-even TMDs and GPDs; (b) diagram for T-odd TMDs. Note that in the case of GPDs the kinematics of Fig. 1 has to be used.Reuse & Permissions

Figure 7

Cut diagrams contributing to diquark TMDs and GPDs in the scalar diquark model: (a) diagram for T-even TMDs and GPDs; (b) diagram for T-odd TMDs. Note that in the case of GPDs the kinematics of Fig. 1 has to be used.Reuse & Permissions

Figure 8

Cut diagrams contributing to quark TMDs and GPDs in the quark target model: (a) diagrams for T-even TMDs and GPDs; (b) diagram for T-odd TMDs. Note that in the case of GPDs the kinematics of Fig. 1 has to be used.Reuse & Permissions

Figure 9

Cut diagrams contributing to gluon TMDs and GPDs in the quark target model: (a) diagram for T-even TMDs and GPDs; (b) diagram for T-odd TMDs. Note that in the case of GPDs the kinematics of Fig. 1 has to be used, and that diagram (b) contains a Wilson line for gluons. The open circle on the upper end of the gluon lines indicates a special Feynman rule for the field strength tensor in the definition of parton distributions for gluons (see Refs. 49, 83).Reuse & Permissions