We summarise recent progress in theory and experiment towards understanding of ${\eta }'$-meson interactions with nucleons and nuclei. Highlights include the production mechanism of ${\eta }'$ mesons in proton–proton collisions close to the threshold, the ${\eta }'$ effective mass shift in nuclei and the determination of the ${\eta }'$-nucleon scattering length in free space.
number of pulisher's sheets:
0,7
affiliation:
Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego