9 papers
Compositness and wave function of shallow bound states in relation to scattering observables
Ibuki Terashima, Tetsuo Hyodo
We study the internal structure of exotic hadrons, especially focusing on the relation between the compositeness and physical observables. Defined as the probability of finding had…
Entanglement suppression for scattering
Katsuyoshi Sone, Tao-Ran Hu, Feng-Kun Guo +2
We study entanglement suppression in -wave scattering, where each baryon has spin . By treating the -matrix as a quantum operator acting on the spin states, we qu…
Entanglement suppression and emergent symmetries in hadron scatterings
Tao-Ran Hu, Su Chen, Katsuyoshi Sone +3
Recently entanglement suppression was proposed to be one potential origin of emergent symmetries. In this work, we extend this theoretical framework to accommodate particles with a…
Effect of eigenstates on spectra in coupled-channel scattering with the chiral unitary model
Takuma Nishibuchi, Tetsuo Hyodo
In recent years, as experimental data on the excited and states have accumulated, theoretical analyses based on chiral dynamics have also been actively pursue…
Threshold cusp structures in multi-channel scattering
Katsuyoshi Sone, Tetsuo Hyodo
We study the behavior of the cusp structures focusing on the isospin symmetry breaking effects. The properties of the exotic hadrons are reflected in the shape of the cusp structur…
Eigenstates in coupled-channel scattering amplitude and their effects on spectrum
Takuma Nishibuchi, Tetsuo Hyodo
In general, discrete eigenstates such as resonances are represented by poles of the scattering amplitude, analytically continued to the complex energy plane. In multi-channel scatt…