Nearly every object we interact with in our lives has a mass, but where does this mass come from? Modern physics says matter ...

Researchers investigated how the η′ meson behaves inside atomic nuclei and found evidence that it may form bound states known as η′-mesic nuclei. Using high-energy particle experiments and ...

New experiments reveal possible η′-mesic nuclei, offering evidence that particle masses shift inside nuclear matter and ...

Physicists working at Germany’s GSI Helmholtz Centre have found the first experimental hints that an unusually heavy subatomic particle, the eta-prime meson, can bind to an atomic nucleus. If ...

Successful experiment by an international research team at GSI/FAIR in Darmstadt An international research team has found evidence of the existence of an exotic atomic nucleus state in an experiment ...