This page shows the single-nucleon effective mass and various fits of the ground state energy for the nucleon at different momenta. The plots are analogous to Fig. 2 in the paper, including momenta larger than zero.
The ground state energy of the nucleon at q=0
The ground state energy of the nucleon at q=1
The ground state energy of the nucleon at q=2
The ground state energy of the nucleon at q=3
The ground state energy of the nucleon at q=4