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Conference Papers Year : 2022

NLO collinear factorization of large mass diphoton photoproduction amplitude

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.

Dates and versions

hal-03309342 , version 1 (30-07-2021)

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Oskar Grocholski, Bernard Pire, Paweł Sznajder, Lech Szymanowski, Jakub Wagner. NLO collinear factorization of large mass diphoton photoproduction amplitude. XXVIII International Workshop on Deep-Inelastic Scattering and Related Subjects, Apr 2021, New York, United States. pp.078. ⟨hal-03309342⟩
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