2004/04/06 by Jun He, Yubing Dong, Yu-Bing Dong
Physics and Astronomy · #Anomalous magnetic dipole moment #Black Holes and Theoretical Physics #Boson #Fermion #Goldstone boson #Magnetic moment #Meson #Muon #Nucleon #Particle physics #Particle physics theoretical and experimental studies #Physics #Pion #Pseudoscalar #Pseudoscalar meson #Quantum Chromodynamics and Particle Interactions #Quantum electrodynamics #Quantum mechanics #Scalar (mathematics) #nucl-th
paper · pdf · doi:10.1088/0253-6102/43/1/027
published as Commun.Theor.Phys.43:139-146,2005 · 15 pages,5 figures
arxiv created 2004/04/06 · openalex publication_date 2005/01/01 · arxiv updated 2014/11/18 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We derive the exchange currents of pseudoscalar, vector, and scalar mesons from Feynman diagrams, and use them to calculate the magnetic form factors of nucleon and Δ(1232). The magnetic moments and electromagnetic radii are obtained by using those form factors and the parameters determined from the masses of nucleon and Δ(1232). We find the magnetic moments and electromagnetic radii of nucleon and Δ(1232) can be produced very well in the extended Goldstone–Boson-exchange model in which all of pseudoscalar, vector, and scalar meson nonet are included. The magnetic moments of Δ(1232) are closer to experiment values and results from lattice calculation than the results obtained by the model without other mesons except for pion and sigma.