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arXiv · 0904.0686

A concept for the experimental determination of the nucleon electric to magnetic form factor ratio at very low $Q^2$

G. Ron·E. Piasetzky·B. Wojtsekhowski
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Abstract

Stationary target measurements of the nucleon form factors have been performed with high precision down to $Q^2$ of $\sim$ 0.01 GeV$^2$ for protons ($G_E^p$) and down to $\sim$ 0.1 GeV$^2$ for neutrons ($G_M^n$). Conventional extraction using cross section and polarization measurement cannot be extended to very low values of $Q^2$ due to inherent experimental limitations. We present a proposal for a new approach to a measurement, using colliding beams, which will extend the range of possible measurement at low $Q^2$ by several orders of magnitude over stationary target limits.

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G. Ron, E. Piasetzky, B. Wojtsekhowski. 2009-04-05. A concept for the experimental determination of the nucleon electric to magnetic form factor ratio at very low $Q^2$. https://doi.org/10.1088/1748-0221/4/05/p05005

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