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NLO collinear factorization of large mass diphoton photoproduction amplitude

High Energy Physics - Phenomenology 2021-08-02 v1 High Energy Physics - Experiment Nuclear Experiment
Authors: Oskar Grocholski , Bernard Pire , Paweł Sznajder , Lech Szymanowski , Jakub Wagner
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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.

Keywords

diphoton photoproduction collinear factorization next-to-leading order generalized parton distributions collinear divergences 2 to 3 processes

Cite

@article{arxiv.2107.14108,
  title  = {NLO collinear factorization of large mass diphoton photoproduction amplitude},
  author = {Oskar Grocholski and Bernard Pire and Paweł Sznajder and Lech Szymanowski and Jakub Wagner},
  journal= {arXiv preprint arXiv:2107.14108},
  year   = {2021}
}

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