Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1999-07-30
Phys.Rev.C60:062201,1999
Physics
Nuclear Physics
Nuclear Theory
5 pages, REVTEX, epsfig, 3 figures
Scientific paper
10.1103/PhysRevC.60.062201
Nucleon form factors are calculated on q^2 in [0,3] GeV^2 using an Ansatz for the nucleon's Fadde'ev amplitude motivated by quark-diquark solutions of the relativistic Fadde'ev equation. Only the scalar diquark is retained, and it and the quark are confined. A good description of the data requires a nonpointlike diquark correlation with an electromagnetic radius of 0.8 r_pi. The composite, nonpointlike nature of the diquark is crucial. It provides for diquark-breakup terms that are of greater importance than the diquark photon absorption contribution.
Bender Axel
Bloch Jacques C. R.
Frank Michael R.
Roberts Christopher D.
Schmidt Steve M.
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