Electromagnetic form factors of the baryon octet in the perturbative chiral quark model
| Autor: | Yupeng Yan, Valery E. Lyubovitskij, Th. Gutsche, K. Pumsa-ard, Amand Faessler, S. Cheedket |
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| Rok vydání: | 2004 |
| Předmět: |
Physics
Nuclear and High Energy Physics Particle physics Octet High Energy Physics::Lattice High Energy Physics::Phenomenology Nuclear Theory Quark model Form factor (quantum field theory) FOS: Physical sciences Charge (physics) Baryon High Energy Physics - Phenomenology Coupling (physics) High Energy Physics - Phenomenology (hep-ph) High Energy Physics::Experiment Nuclear Experiment Nucleon Pion decay constant |
| Zdroj: | The European Physical Journal A. 20:317-327 |
| ISSN: | 1434-601X 1434-6001 |
| DOI: | 10.1140/epja/i2003-10165-4 |
| Popis: | We apply the perturbative chiral quark model at one loop to analyze the electromagnetic form factors of the baryon octet. The analytic expressions for baryon form factors, which are given in terms of fundamental parameters of low-energy pion-nucleon physics (weak pion decay constant, axial nucleon coupling, strong pion-nucleon form factor), and the numerical results for baryon magnetic moments, charge and magnetic radii are presented. Our results are in good agreement with experimental data. Comment: 15 pages, 6 figures, to be published in Eur. Phys. J. A |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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