Deeply virtual Compton scattering off Helium nuclei with positron beams Sara Fucini, Mohammad Hattawy, Matteo Rinaldi and Sergio Scopetta Eur. Phys. J. A, 57 9 (2021) 273 Published online: 15 September 2021 DOI: 10.1140/epja/s10050-021-00580-y