Study of η-nucleus interaction through the formation of η-nucleus bound state

摘要

The question of possible existence of η-mesic nuclei is quite intriguing. Answer to this question will deeply enrich our understanding of η-nucleus interaction which is not so well-understood. We review the experimental efforts for the search of η-mesic nuclei and describe the physics motivation behind it. We present the description of an experiment for the search of η-nucleus bound state using the GeV proton beam, currently being performed at COSY.