PoS - Proceedings of Science
Volume 352 - XXVII International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS2019) - Working Group 6: Spin and 3D Structure
Exclusive production of a large mass photon pair
A. Pędrak,* B. Pire, L. Szymanowski, J. Wagner
*corresponding author
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Pre-published on: August 26, 2019
Published on: October 04, 2019
Abstract
The scattering amplitude for photoproduction of a large invariant mass diphoton in the generalized Bjorken regime has a very peculiar and interesting analytical structure. The leading twist leading order amplitude is proportional to valence quark generalized parton distributions taken at the border value $x=\pm \xi$. Cross section estimates show that this process is measurable at JLab energies. The angular asymmetry triggered by a linearly polarized photon beam is large.
DOI: https://doi.org/10.22323/1.352.0196
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