2007/01/01 by H. -Ch. Kim, Hyun-Chul Kim, Ghil-Seok Yang +2
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1143/ptps.168.62
published as Prog.Theor.Phys.Suppl.168:62-69,2007 · 8 pages, 5 figures, Talk given at the Yukawa International Seminar (YKIS) 2006, "New frontiers in QCD", Kyoto, Japan, 20 Nov. - 8 Dec. 2006
openalex publication_date 2007/01/01 · arxiv created 2007/04/13 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We report the recent results of the magnetic transitions and axial-vector transitions of the baryon antidecuplet within the framework of the chiral quark-soliton model. The dynamical model parameters are fixed by experimental data for the magnetic moments of the baryon octet, for the hyperon semileptonic decay constants, and for the singlet axialvector constant. The transition magnetic moments µΛΣ and µN ∆ are well reproduced and other octet-decuplet and octet-antidecuplet transitions are predicted. In particular, the present calculation of µΣΣ ∗ is found to be below the upper bound 0.82µN that the SELEX collaboration measured very recently. The results explains consistently the recent findings of a new N ∗ resonance from the GRAAL and Tohoku LNS group. We also obtain the transition axial-vector constants for the Θ + → KN from which the decay width of the Θ + pentaquark baryon is determined as a function of the pion-nucleon sigma term ΣπN. We investigate the dependence of the decay width of the Θ + on the g (0) A, with the g(0)