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関原 隆泰; 兵藤 哲雄*; 慈道 大介*; 山縣(関原) 淳子*; 安井 繁宏*
Proceedings of Science (Internet), 281, p.289_1 - 289_8, 2017/05
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.