New empirical fits to the proton electromagnetic form factors

Details New empirical fits to the proton electromagnetic form factors New empirical fits to the proton electromagnetic form factors

2001-11-10

arxiv.org/abs/hep-ex/0111038v3

Phys.Rev. C65 (2002) 051001

Physics

High Energy Physics

High Energy Physics - Experiment

Scientific paper

10.1103/PhysRevC.65.051001

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.

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