and nucleus system studied by C(, ) reaction

Ichikawa, Yudai   ; Sako, Hiroyuki   ; Sato, Susumu  ; Tanida, Kiyoshi   ; Hasegawa, Shoichi   ; Tamura, Hirokazu

We have measured an inclusive missing-mass spectrum of the C reaction over wide energy region at the kaon incident momentum of 1.8 GeV/ at J-PARC K1.8 beam line. We have compared the observed missing-mass spectrum with a DWIA calculation to study the -nucleus interaction. In this comparison, we have changed the depth of both real and imaginary part of the optical potential between and nucleus. It is found that the observed spectrum is well reproduced by the calculation of the potential depth of MeV (real part) and MeV (imaginary part). On the other hand, we have observed the definitive excess in the deeply bound region MeV, which cannot be explained by the any optical potential. This excess can be interpreted as a deeply bound nucleus.