2005/01/25 by M. F. M. Lutz, Matthias F. M. Lutz, E. E. Kolomeitsev +1 · 70 citations
Physics and Astronomy · #Baryon #Charm (quantum number) #Hadron #High-Energy Particle Collisions Research #Meson #Multiplet #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #Resonance (particle physics) #Spectral line #hep-ph
paper · pdf · doi:10.1016/j.nuclphysa.2005.03.110
published in Nuclear Physics A 755, 29-39 (Elsevier BV)
arxiv created 2005/01/25 · openalex publication_date 2005/05/29 · arxiv updated 2010/12/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We discuss the formation of s- and d-wave baryon resonances as predicted by the chiral SU(3) symmetry of QCD. Based on the leading order term of the chiral Lagrangian a rich spectrum of molecules is generated, owing to final-state interactions. The spectrum of s- and d-wave baryon states with zero and non-zero charm is remarkably consistent with the empirical pattern. In particular, the recently announced Sigmac(2800) of the BELLE collaboration is reproduced with realistic mass and width parameters. Similarly, the d-wave states Lambdac(2625) and Xic(2815) are explained naturally to be chiral excitations of JP=3/2+ states. In the open-charm sector exotic multiplet structures are predicted. These findings support a radical conjecture: meson and baryon resonances that do not belong to the large-Nc ground state of QCD should be viewed as hadronic molecular states