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Hi Folks,</div>
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I would like to give a talk on GEP at DNP this October. Please comment as you see fit.</div>
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Here is my proposed abstract:</div>
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The GEP-5 Form Factor Experiment in Hall A at Jefferson Lab</div>
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Measurements of the elastic electromagnetic form factors of the proton and neutron have been a central component of Jefferson Lab’s scientific program for almost four decades and have been<b> </b>important, among other things, in constraining Generalized Parton
Distributions and testing the validity of the onset of perturbative quantum chromodynamics. The ratio of $G_E^p/G_M^p$ measured in the late 1990s at Jefferson Lab via the polarization transfer technique and published in 2000 showed that $G_E^p$ falls off more
rapidly than $G_M^p$ at $Q^2>1$~GeV$^2$ in contradiction of results from cross section measurements using the Rosenbluth separation method. This led to the measurement<b> </b>of $G_E^p/G_M^p$ by the recoil poalrization method up to 8.5~GeV$^2$ in 2008.
A new measurement of $G_E^p$ is under preparation with plans to reach as high as 12~GeV$^2$. With the form factor dropping as $Q^{-4}$ and the cross section as $Q^{-12}$, going to high $Q^2$ is a challenge, with a large acceptance needed for statistics and
the ability to discriminate elastic events from the backgrounds at very high background rates. I will discuss the motivation for this new measurement and how some of the challenges will be met. </div>
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-Don <br>
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Donald Jones</div>
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Hall A/C Staff Scientist</div>
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Jefferson Lab</div>
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Newport News, VA</div>
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