Using the Crystal Barrel(CB)/TAPS detector system at the ELSA accelerator facility in Bonn the eta photoproduction off nuclei (C, Ca, Nb and Pb) was studied via the hadronic decay channel eta -> pi^0pi^0eta . Recent results on the in-medium properties of the eta-meson, derived from the transparency ratio measurements, are presented. The absorption of the eta-meson in nuclear matter is compared to the properties of other mesons (eta, omega).
تحميل البحث