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arXiv · 1907.08431

Exclusive production of a large mass photon pair

A. Pedrak·B. Pire·L. Szymanowski·J. Wagner
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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 $x=\pm ξ$. Cross section estimates show that this process is measurable at JLab energies. The angular asymmetry triggered by a linearly polarized photon beam is large.

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A. Pedrak, B. Pire, L. Szymanowski, J. Wagner. 2019-07-19. Exclusive production of a large mass photon pair. https://arxiv.org/abs/1907.08431

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