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High Q² electron-proton elastic scattering at the future Electron-Ion Collider

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arxiv 2207.04378 v1 pith:ELZTHT6P submitted 2022-07-10 nucl-ex

High Q² electron-proton elastic scattering at the future Electron-Ion Collider

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keywords elastichighcolliderelectron-ionelectron-protonfuturemeasurementsscattering
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Unpolarized electron-proton elastic scattering cross-section measurements at high $Q^2$ allow for improved extractions of the proton electromagnetic form factors as well as provide constraints on possible hard two-photon exchange effects. We present a detailed study of the feasibility of making these high $Q^2$ e-p elastic measurements at the future Electron-Ion Collider (EIC). The results show that e-p elastic cross sections can be obtained in the momentum transfer range of $6~(GeV/c)^2 < Q^2 < 40~(GeV/c)^2$, which would be the highest-ever $Q^2$ values measured. These data will all be at virtual photon polarizations close to unity, $\epsilon \sim 1$.

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