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20242026
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hep-ph2026

Compositeness of near-threshold exotic hadrons in systems with Coulomb and short-range interactions

Tomona Kinugawa, Tetsuo Hyodo

We study the universal properties of near-threshold -wave eigenstates in systems with Coulomb plus short-range interactions by analyzing their compositeness. Using a nonrelativi…

hep-ph2026

Isospin-breaking effects on the threshold cusp structures in - scattering

Katsuyoshi Sone, Tetsuo Hyodo

We discuss the isospin-breaking effects on threshold cusp structures in multichannel scattering near two-body thresholds. In hadronic systems with isospin symmetry, two or more nea…

hep-ph2026

Compositeness of near-threshold states in charged hadronic systems

Tomon Kinugawa, Tetsuo Hyodo

We quantify the internal structure of near-threshold bound, virtual, and resonance states in systems where Coulomb and short-range interactions coexist by evaluating the compositen…

hep-ph2026

Compositeness of near-threshold eigenstates with Coulomb plus short-range interactions

Tomona Kinugawa, Tetsuo Hyodo

We investigate the internal structure of near-threshold -wave eigenstates in a two-body system with Coulomb plus short-range interactions. Using a nonrelativistic effective fiel…

hep-ph2026

Threshold Cusp Structures in the Presence of Isospin Symmetry Breaking

Katsuyoshi Sone, Tetsuo Hyodo

We study the behavior of the cusp structures focusing on the isospin-breaking effects. The properties of the near-threshold exotic hadrons are encoded in the shapes of the cusp str…

hep-ph2026

Structure of near-threshold states in systems with Coulomb and short-range interactions

Tomona Kinugawa, Tetsuo Hyodo

We study the nature of near-threshold eigenstates in systems with the attractive Coulomb plus short-range interactions. Using a model providing the Coulomb-modified effective range…