Title
Electromagnetic nucleon form factors from QCD sum rules
Date Issued
01 January 2005
Access level
open access
Resource Type
research article
Author(s)
Dominguez C.A.
Loewe M.
Pontificia Universidad Católica de Chile
Abstract
The electromagnetic form factors of the nucleon, in the space-like region, are determined from three-point function Finite Energy QCD Sum Rules. The QCD calculation is performed to leading order in perturbation theory in the chiral limit, and to leading order in the non-perturbative power corrections. The results for the Dirac form factor, F1(q2), are in very good agreement with data for both the proton and the neutron, in the currently accessible experimental region of momentum transfers. This is not the case, though, for the Pauli form factor F2(q2), which has a soft q2-dependence proportional to the quark condensate 〈0|q̄q|0〉. © SISSA/ISAS 2005.
Start page
251
End page
261
Issue
3
Language
English
OCDE Knowledge area
Física de partículas, Campos de la Física
Scopus EID
2-s2.0-27344458348
Source
Journal of High Energy Physics
ISSN of the container
10298479
Sources of information: Directorio de Producción Científica Scopus