η and η′ mesons in nuclear matter and nuclei

We present updated and extended results for the - and ^'-nucleus bound state energies, obtained by solving the Schr\"odinger and Klein-Gordon equations with complex optical potentials, for a wide range of nuclei. The and ^' nuclear potentials are obtained in the local density approximation from the mass shift of these mesons in nuclear matter, which is calculated within the quark-meson coupling model. Our results show that the and ^' mesons are expected to form mesic nuclei with all the nuclei considered. However, the signal for the formation of the - and ^'-mesic nuclei may be difficult to identify experimentally due to possible large widths.