Onset of η nuclear binding Nir Barnea, Betzalel Bazak, Eliahu Friedman, Avraham Gal, Aleš Cieplý, Jiří Mareš and Martin Schäfer EPJ Web of Conferences, 181 (2018) 01011 Published online: 25 June 2018 DOI: 10.1051/epjconf/201818101011