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Nucleon form factors in a relativistic quark model |
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| Authors: | Y.B. DongOn leave from Institute of High Energy Physics Academia Sinica Beijing P. R. China--> A. Faessler K. Shimizu |
| Affiliation: | Institüt für Theoretische Physik, Universit?t of Tübingen, 72076 Tübingen, Germany, DE |
| Abstract: | Electromagnetic form factors of protons and neutrons are investigated based on a relativistic quark model with the inclusion of a pion cloud. Pseudo-scalar π-quark interaction is employed to study the coupling between the nucleon and the π. The results show the important role of the pion cloud for the neutron charge form factor. Moreover, our numerical analysis indicates a difference between the relativistic and the nonrelativistic treatments. Received: 10 March 1999 / Revised version: 14 June 1999 |
| Keywords: | PACS: 12.39.Jh Nonrelativistic quark model – 12.39.Ki Relativistic quark model – 12.39.Pn Potential models – 12.40.Vv Vector-meson dominance – 12.40.Yx Hadron mass models and calculations – 13.40.Em Electric and magnetic moments – 13.40.Gp Electromagnetic form factors – 13.40.Hq Electromagnetic decays |
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