Study of the K-nucleus interaction by using the C(K, p) reaction

Ichikawa, Yudai   

An interaction between K and nucleus is studied by using the X-ray from the kaonic atoms for a long time. However, it is difficult to determine the K-nucleus interaction by using only X-ray because the value of shift and width of X-ray is not only the potential depth but also the type of theoretical model. Thus, we plan to study it from the other way. In this study, we measure the missing-mass spectrum of the C(K, p) reaction at J-PARC and compare it with the DWIA calculation. Such kind of study have already reported from an experiment at Proton Synchrotron (E548). However, their spectrum is not inclusive one but semi-inclusive one, which is required at least one charged particle hit by their decay counter. Therefore, it is point out that this requirement can distort the inclusive spectrum. In our experiment, we will carry out the inclusive missing-mass spectroscopy by measuring only the K and proton's momenta. Furthermore, we plan to install the decay counter to check whether at least one charged particle hit distort it or not.