New empirical fits to the proton electromagnetic form factors

Abstract

Recent measurements of the ratio of the elastic electromagnetic form factors of the proton, G_Ep/G_Mp, using the polarization transfer technique at Jefferson Lab show that this ratio decreases dramatically with increasing Q^2, in contradiction to previous measurements using the Rosenbluth separation technique. Using this new high quality data as a constraint, we have reanalyzed most of the world e-p elastic cross section data. In this paper, we present a new empirical fit to the reanalyzed data for the proton elastic magnetic form factor in the region 0 < Q^2 < 30 GeV^2. As well, we present an empirical fit to the proton electromagnetic form factor ratio, G_Ep/G_Mp, which is valid in the region 0.1 < Q^2 < 6 GeV^2.

References in corpus (3)

• Measurement of GEp/GMp in ep -> ep to Q2 = 5.6 GeV2
• Extended Gari-Krumpelmann model fits to nucleon electromagnetic form factors
• QED Radiative Corrections to Asymmetries of Elastic ep-scattering in Hadronic Variables

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