Compositeness of Hadrons and Near-Threshold Dynamics

Abstract

We present the recent developments in the studies of the structure of hadron resonances, focusing on the compositeness in terms of the hadronic degrees of freedom. We discuss the model dependence of the compositeness, and show that the structure of the near-threshold bound states and resonances is model-independently determined. The applications to various hadrons are summarized.

9 pages, talk given at The 10th International Workshop on the Physics of Excited Nucleons (NSTAR2015) May 25-28, 2015, Osaka, Japan, to appear in JPS Conf. Proc

References in corpus (11)

• Observation of $J/\psi p$ resonances consistent with pentaquark states in ${\Lambda }_b^0\to J/\psi K^{-}p$ decays
• Effective Kbar N interaction based on chiral SU(3) dynamics
• Origin of resonances in the chiral unitary approach
• Comprehensive analysis of the wave function of a hadronic resonance and its compositeness
• Scattering Models for Ultracold Atoms
• Remarks on pole trajectories for resonances
• Compositeness of the strange, charm and beauty odd parity $\Lambda$ states
• Hadron mass scaling near the s-wave threshold
• $\Xi (1690)$ as a $\bar{K}\Sigma$ molecular state
• The composite nature of the $\Lambda (1520)$ resonance
• Bound states on the lattice with partially twisted boundary conditions