Study of phi mass modification with k k decay in p+A collisions at J-PARC

佐藤 進; 佐甲 博之; 三明 康郎*; 稲葉 基*; 中條 達也*; 小沢 恭一郎*; 喜屋武 奨之*; 江角 晋一*; 野中 俊宏*

no journal, , 

We are proposing an experiment to study phi mass modification through k k decay in p + A collisions at J-PARC. We exect to obtain several hundred thousands of phi to k k decays in p+C and p+Cu collisions with 30 GeV proton beams. The phi mass modification is sensitive not only modification but also to the branching ratio due to the small Q value. In this presentation, we discuss the physics of phi in nucleus, the design of the experiment, and the research and development status and plan of the kaon identification detectors.