R. Bijker*
Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Apartado Postal 70–543, 04510 México, D.F., México
* Invited talk at 'XXVIII Nuclear Physics Symposium', Cocoyoc, México, January 4–7, 2005.
Recibido el 27 de enero de 2005
Aceptado el 12 de marzo de 2005
]]> Abstract
Recent experimental data on space– and time–like form factors of the nucleon are analyzed in terms of a two–component model with a quark–like intrinsic structure and a meson cloud. A good overall agreement is found for all electromagnetic form factors with the exception of the neutron magnetic form factor in the time–like region.
Keywords: Electromagnetic form factors; protons and neutrons.
Resumen
Se presenta el análisis de datos experimentales recientes de los factores de forma de espacio y tiempo del nucleón. Este análisis se realiza en términos de un modelo de dos componentes con una estructura intrínseca tipo quark y una nube masónica. Se obtuvo un buen acuerdo general para todos los factores de forma electromagnéticos con excepción del factor de forma magnético del neutrón en la región temporal.
Descriptores: Factores de forma electromagnéticos; protones y neutrones.
PACS: 13.40.Gp; 14.20.Dh
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Acknowledgments
This work was supported in part by Conacyt, Mexico. It is a pleasure to thank Franco Iachello and Kees de Jager for stimulating discussions.
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