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arXiv · 0706.0128

The Proton Elastic Form Factor Ratio at Low Momentum Transfer

G. Ron·J. Glister·B. Lee
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Abstract

High precision measurements of the proton elastic form factor ratio have been made at four-momentum transfers, Q^2, between 0.2 and 0.5 GeV^2. The new data, while consistent with previous results, clearly show a ratio less than unity and significant differences from the central values of several recent phenomenological fits. By combining the new form-factor ratio data with an existing cross-section measurement, one finds that in this Q^2 range the deviation from unity is primarily due to GEp being smaller than the dipole parameterization.

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G. Ron, J. Glister, B. Lee. 2007-11-22. The Proton Elastic Form Factor Ratio at Low Momentum Transfer. https://doi.org/10.1103/physrevlett.99.202002

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