Updated dispersion-theoretical analysis of the nucleon electromagnetic form factors
| dc.creator | Hammer, H. -W. | |
| dc.creator | Meißner, Ulf-G. | |
| dc.date | 2003-12-05 | |
| dc.date | 2004-03-24 | |
| dc.date.accessioned | 2026-07-07T03:51:29Z | |
| dc.date.available | 2026-07-07T03:51:29Z | |
| dc.description | In the light of the new data on the various neutron and proton electromagnetic form factors taken in recent years, we update the dispersion-theoretical analysis of the nucleon electromagnetic form factors from the mid-nineties. The parametrization of the spectral functions includes constraints from unitarity, perturbative QCD, and recent measurements of the neutron charge radius. We obtain a good description of most modern form factor data, with the exception of the Jefferson Lab data on G_E^p/G_M^p in the four-momentum transfer range Q^2=3...6 GeV^2. For the magnetic radii of the proton and the neutron we find r_M^p = 0.857 fm and r_M^n = 0.879 fm, which is consistent with the recent determinations using continued fraction expansions. | |
| dc.description | 5 pages, 3 ps figures, final version, exp. errors in Figs. 1 and 3 corrected | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0312081 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0312081 | |
| dc.identifier | Eur.Phys.J. A20 (2004) 469-473 | |
| dc.identifier | doi:10.1140/epja/i2003-10223-y | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/43116 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | Nuclear Experiment | |
| dc.subject | Nuclear Theory | |
| dc.title | Updated dispersion-theoretical analysis of the nucleon electromagnetic form factors | |
| dc.type | text |