| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 9851082 | Nuclear Physics A | 2005 | 5 Pages |
Abstract
Electron scattering at large Q2 probes a nucleon's quark core. This core's contribution to electromagnetic form factors may be calculated using Poincaré covariant Faddeev amplitudes combined with a nucleon-photon vertex that automatically fulfills a Ward-Takahashi identity for on-shell nucleons. The calculated behaviour of GEp(Q2)/GMp(Q2) on Q2â[2,6]Â GeV2 agrees with that inferred from polarisation transfer data, and exhibits a zero at Q2â6.5Â GeV2. There is some evidence that F2(Q2)/F1(Q2)â[lnQ2/Î2]2/Q2 for Q2â³6Â GeV2.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
A. Höll, R. Alkofer, M. Kloker, A. Krassnigg, C.D. Roberts, S.V. Wright,