FIRST RESULTS ON THE EXPERIMENTAL SEARCH FOR eta'-MESIC NUCLEI WITH THE C-12(p, d) REACTION

We performed a missing-mass spectroscopy experiment of the C-12(p, d) reaction in order to search for eta'-mesic nuclei. Excitation spectrum of C-11 around the eta'-meson production threshold was successfully obtained with a high-statistical sensitivity and sufficiently good energy resolution. Since no peak structure associated with the formation of eta'-mesic nuclei was observed, we set constraints on the formation cross sections of eta'-mesic states and on the eta'-nucleus interaction