Potential linear and angular momentum in the scalar diquark model David Arturo Amor-Quiroz, Matthias Burkardt, William Focillon and Cédric Lorcé Eur. Phys. J. C, 81 7 (2021) 589 Published online: 06 July 2021 DOI: 10.1140/epjc/s10052-021-09345-9