Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2002-03-29
Phys.Rev.C66:045501,2002
Physics
Nuclear Physics
Nuclear Theory
14 pages, 8 figures, using RevTeX4; email correspondence to lomon@lns.mit.edu ; minor typos corrected, figures added, conclusi
Scientific paper
10.1103/PhysRevC.66.045501
The Gari-Krumpelmann (GK) models of nucleon electromagnetic form factors, in which the rho, omega, and phi vector meson pole contributions evolve at high momentum transfer to conform to the predictions of perturbative QCD (pQCD), was recently extended to include the width of the rho meson by substituting the result of dispersion relations for the pole and the addition of rho' (1450) isovector vector meson pole. This extended model was shown to produce a good overall fit to all the available nucleon electromagnetic form factor (emff) data. Since then new polarization data shows that the electric to magnetic ratios R_p and R_n obtained are not consistent with the older G_{Ep} and G_{En} data in their range of momentum transfer. The model is further extended to include the omega' (1419) isoscalar vector meson pole. It is found that while this GKex cannot simultaneously fit the new R_p and the old G_{En} data, it can fit the new R_p and R_n well simultaneously. An excellent fit to all the remaining data is obtained when the inconsistent G_{Ep} and G_{En} is omitted. The model predictions are shown up to momentum transfer squared, Q^2, of 8 GeV^2/c^2.
No associations
LandOfFree
Effect of recent R_p and R_n measurements on extended Gari-Krumpelmann model fits to nucleon electromagnetic form factors does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Effect of recent R_p and R_n measurements on extended Gari-Krumpelmann model fits to nucleon electromagnetic form factors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Effect of recent R_p and R_n measurements on extended Gari-Krumpelmann model fits to nucleon electromagnetic form factors will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-585029