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NLO collinear factorization of large mass diphoton photoproduction amplitude
by Oskar Grocholski, Bernard Pire, Paweł Sznajder, Lech Szymanowski, Jakub Wagner
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Submission summary
| Authors (as registered SciPost users): | Oskar Grocholski |
| Submission information | |
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| Preprint Link: | https://arxiv.org/abs/2107.14108v1 (pdf) |
| Date accepted: | 2022-03-21 |
| Date submitted: | 2021-07-30 09:03 |
| Submitted by: | Grocholski, Oskar |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | 28th Annual Workshop on Deep-Inelastic Scattering (DIS) and Related Subjects (DIS2021) |
| Ontological classification | |
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| Academic field: | Physics |
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| Approaches: | Theoretical, Phenomenological |
Abstract
We calculate large mass diphoton exclusive photoproduction in the framework of collinear QCD factorization at next to leading order in {\alpha}s and at leading twist. Collinear divergences of the coefficient function are absorbed by the evolution of the generalized parton distributions (GPDs). This result enlarges the existing factorization proofs to 2 -> 3 processes, opening new reactions to a trustable extraction of GPDs.
Published as SciPost Phys. Proc. 8, 078 (2022)