Study of the performance of electro-magnetic calorimeter for the rare neutral kaon decay.

点击翻译按钮获取中文摘要

The motivation of this research is to search for new physics beyond the standard model by the world's first measurement of the very rare decay, K→π0νν-. The experiment has been performed by high intensity proton beam at J-PARC. We constructed an electro-magnetic calorimeter composed of the CsI crystal as a main detector and evaluated the performance using the beams. The experiment is delayed about 1 year due to the Grate East Japan Earthquake, however, we have started to accumulate the physics data.