Isospin symmetry violation, meson production and η-nucleus interaction studies

We have studied isospin symmetry violation in nuclear reactions by measuring simultaneously the cross-section of the following two reactions p + d → 3H π+ and p + d → 3He π0. The experiment was performed at the cooler synchrotron accelerator COSY, Juelich at several beam energies close to the corresponding η production threshold. We also have ongoing programmes on η-nucleus final-state interaction studies via p+6Li → 7Be +η reactions, high resolution search for dibaryonic resonances and lambda-proton final state interaction studies. The experimental details and results obtained so far are presented here. (author)