The ${\eta }^{\prime }N$ interaction from a chiral effective model and ${\eta }^{\prime }$-$N$ bound state

Shuntaro Sakai, Daisuke Jido

The ${\eta }^{\prime }$ mass reduction in the nuclear medium is expected from the degeneracy of the pseudoscalar-singlet and octet mesons when chiral symmetry is manifest. In this study, we inves…