A model for polarized nuclear DVCS on ³He is simulated for 9×166 GeV e³He collisions at the EIC, showing early data enable precise measurements of unpolarized CFF H but polarized tilde H requires substantially more luminosity.
Measurement of Deeply Virtual Compton Scattering at HERA
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abstract
A measurement is presented of elastic deeply virtual Compton scattering \gamma* p \to \gamma p made using e^+ p collision data corresponding to a luminosity of 46.5 pb^{-1}, taken with the H1 detector at HERA. The cross section is measured as a function of the photon virtuality, Q^2, the invariant mass of the \gamma* p system, W, and for the first time, differentially in the squared momentum transfer at the proton vertex, t, in the kinematic range 2 < Q^2 < 80 GeV^2, 30 < W < 140 GeV and |t| < 1 GeV^2. QCD based calculations at next-to-leading order using generalized parton distributions can describe the data, as can colour dipole model predictions.
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Polarized Nuclear DVCS at the EIC
A model for polarized nuclear DVCS on ³He is simulated for 9×166 GeV e³He collisions at the EIC, showing early data enable precise measurements of unpolarized CFF H but polarized tilde H requires substantially more luminosity.