Research

We study the flavor SU(3) hadron dynamics and baryon resonances, using an effective theory based on chiral symmetry of QCD. We utilize the chiral unitary model in order to investigate the meson-baryon scatterings and properties of the baryon resonances. Several practical reactions are calculated with the phenomenological effective Lagrangians. We also study the exotic pentaquark particle Θ⁺ and the baryon anti-decuplet, in connection with the known experimental information. Our recent studies are summarized below.

• Outline of the chiral unitary model
  
  
  • Study 1 : Effects of flavor symmetry breaking [1], [2]
    
    
  • Study 2 : Magnetic moments of N(1535) [1]
    
    
  • Study 3 : Structure of Λ(1405) [1], [2]
    
    
• Pentaquark particle Θ⁺
  
  
  • Study 4 : Quantum numbers of Θ⁺ [1]
    
    
  • Study 5 : Self-energy of baryon antidecuplet [1]
    
    
  • Study 6 : Phenomenology of spin 3/2 baryons with pentaquarks [1]
    
    
  • Study 7 : Phenomenological study of two-meson coupling of Theta+ [1]
    
    
  • Reference list of Θ⁺ baryon