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Neutron charge radius and the Dirac equation | | M. Bawin
; S. A. Coon
; | | Date: |
5 Jun 1999 | | Journal: | Phys.Rev. C60 (1999) 025207 | | Subject: | nucl-th | | Affiliation: | University of Liege), S. A. Coon(New Mexico State University | | Abstract: | We consider the Dirac equation for a finite-size neutron in an external electric field. We explicitly incorporate Dirac-Pauli form factors into the Dirac equation. After a non-relativistic reduction, the Darwin-Foldy term is cancelled by a contribution from the Dirac form factor, so that the only coefficient of the external field charge density is $e/6 r^2_{En}$, i. e. the root mean square radius associated with the electric Sachs form factor . Our result is similar to a recent result of Isgur, and reconciles two apparently conflicting viewpoints about the use of the Dirac equation for the description of nucleons. | | Source: | arXiv, nucl-th/9906014 | | Services: | Forum | Review | PDF | Favorites | |
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