2014/06/30 by X. Y. Liu, Xuyang Liu, K. Khosonthongkee +5 · 16 citations
Physics and Astronomy · #Atomic physics #Baryon #Charge (physics) #Constituent quark #Hadron #High-Energy Particle Collisions Research #Meson #Nuclear physics #Octet #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quark #Quark model #Quarkonium #Wave function #hep-ph
paper · pdf · doi:10.1103/physrevd.91.034022
published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 91(3) (American Physical Society) · 6 pages, 4 figures, 5 tables
openalex publication_date 2015/02/24 · arxiv created 2015/03/01 · arxiv updated 2015/03/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The axial form factor as well as the axial charges and radii of octet N, \mathrm\ensuremathΣ, and \mathrm\ensuremathΞ baryons are studied in the perturbative chiral quark model with the quark wave functions predetermined by fitting the theoretical results of the proton charge form factor to experimental data. The theoretical results are found, based on the predetermined quark wave functions, in good agreement with experimental data and lattice values. This may indicate that the electric charge and axial charge distributions of the constituent quarks are the same. The study reveals that the meson cloud plays an important role in the axial charge of octet baryons, contributing 30%--40% to the total values, and strange sea quarks have a considerable contribution to the axial charges of the \mathrm\ensuremathΣ and \mathrm\ensuremathΞ.