TY - JOUR
T1 - Electromagnetic nucleon form factors from QCD sum rules
AU - Castillo, Hernan
AU - Dominguez, Cesareo A.
AU - Loewe, Marcelo
PY - 2005/3
Y1 - 2005/3
N2 - 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〉.
AB - 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〉.
KW - Electromagnetic Processes and Properties
KW - Phenomenological Models
KW - QCD
UR - http://www.scopus.com/inward/record.url?scp=27344458348&partnerID=8YFLogxK
U2 - 10.1088/1126-6708/2005/03/012
DO - 10.1088/1126-6708/2005/03/012
M3 - Article
AN - SCOPUS:27344458348
SN - 1029-8479
SP - 251
EP - 261
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
IS - 3
ER -