Double deeply virtual Compton scattering with positron beams at SoLID
arXiv:2103.12773 · doi:10.1140/epja/s10050-021-00551-3
Abstract
Double Deeply Virtual Compton Scattering (DDVCS) is the only experimental channel for the determination of the dependence of the Generalized Parton Distributions (GPDs) on both the average and the transferred momentum independently. The physics observables of the electron induced di-muon production reaction $\vv{e}^{\pm}p \to e^{\pm}pμ^+μ^-$ off unpolarized hydrogen are discussed. Their measurement with the high luminosity and large acceptance SoLID spectrometer at the Thomas Jefferson National Accelerator Facility, using polarized and unpolarized positron and electron beams at 11 GeV is investigated. This experimental configuration is shown to provide unprecedented access to the GPDs with the determination of the real and imaginary parts of the Compton Form Factor in an unexplored phase space, and to enable an exploratory investigation of higher twist effects.
arXiv comment9 pages, 9 figures
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- An experimental program with high duty-cycle polarized and unpolarized positron beams at Jefferson Lab
- Phenomenology of double deeply virtual Compton scattering in the era of new experiments
- Probing charged lepton flavor violation with a positron beam at CEBAF (JLAB)
- Subthreshold production of mesons from the deuteron with SoLID
- Making the OST of the Muon Collider