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Phys. Rev. C 65, 035205 (2002) [7 pages]

Electromagnetic form factors of nucleons in a light-cone diquark model

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Bo-Qiang Ma*
Department of Physics, Peking University, Beijing 100871, China;
CCAST (World Laboratory), P.O. Box 8730, Beijing 100080, China;
Institute of Theoretical Physics, Academia Sinica, Beijing 100080, China

Di Qing† and Iván Schmidt‡
Departamento de Física, Universidad Técnica Federico, Santa María, Casilla 110-V, Valparaíso, Chile

Received 2 November 2001; published 4 March 2002

We investigate the electromagnetic form factors of nucleons within a simple relativistic quark spectator-diquark model using the light-cone formalism. Melosh rotations are applied to both quark and vector diquark. It is shown that the difference between vector and scalar spectator diquarks reproduces the right electric form factor of neutrons, and both the form factors GE(Q2) and GM(Q2) of the proton and neutron agree with experimental data well up to Q2=2 GeV2 in this simple model.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.65.035205
DOI:
10.1103/PhysRevC.65.035205
PACS:
13.40.Gp, 14.20.Dh, 12.39.Ki

*Electronic address: mabq@phy.pku.edu.cn

†Electronic address: diqing@fis.utfsm.cl

‡Electronic address: ischmidt@fis.utfsm.cl

 
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