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Sako, Hiroyuki; Ekawa, Hiroyuki
no journal, ,
no abstracts in English
-nucleus interaction studied by 
C(
) spectrumIchikawa, Yudai
no journal, ,
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 kaonic-atoms data because the value of shift and width of the X-ray depend not only the potential depth but also the type of theoretical model. Thus, we study the K-nucleus interaction by comparing an observed missing-mass spectrum of the C() reaction with the DWIA calculation. Such a study has already reported from KEK-E548 experiment. However, their experiment is not enough to determine these interaction because they were pointed out about the experimental condition. Thus, we performed the further experiment to take the real spectrum of C() reaction at J-PARC.
Sekihara, Takayasu
no journal, ,
In this contribution, I introduce the physical meaning of the compositeness, its expression, and theoretical evaluation in effective models. In particular, we show that the two-body wave function of the bound state corresponds to the residue of the scattering amplitude at the bound state pole, which means that solving the Lippmann-Schwinger equation at the bound state pole is equivalent to evaluating the two-body wave function of the bound state. Then, we evaluate the compositeness for the so-called dynamically generated resonances in the chiral unitary approach, such as 
, 
, and 
, and investigate their internal structure in terms of the hadronic molecular components.
Maruyama, Toshiki
no journal, ,
no abstracts in English
spectroscopy at Belle