Accessing GPDs through the exclusive photoproduction of a photon-meson pair with a large invariant mass

Nabeebaccus, Saad; Wallon, Samuel; Duplančić, Goran; Passek-Kumerički, Kornelija; Pire, Bernard; Szymanowski, Lech (2023) Accessing GPDs through the exclusive photoproduction of a photon-meson pair with a large invariant mass. Acta Physica Polonica B Proceedings Supplement, 16 (5). ISSN 1899-2358

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Abstract

We study the exclusive photoproduction of a photon-meson pair with a large invariant mass, working at leading twist and leading order in the framework of QCD collinear factorisation. Explicitly, the produced meson is either a rho meson or a charged pion. This process allows us to extract generalised parton distributions. In particular, unlike in deeply-virtual Compton scattering and deeply virtual meson production, considering a transversely-polarised rho meson in the final state enables us to access chiral-odd GPDs at the leading twist, which are not known experimentally. We discuss the prospects of measuring this process at various experiments, such as JLab, EIC and LHC(in ultraperipheral collisions).

Item Type:	Article
Uncontrolled Keywords:	QCD Phenomenology; Generalized Parton Distributions; Photon-Meson Pair; Photoproduction
Subjects:	NATURAL SCIENCES > Physics
Divisions:	Theoretical Physics Division
Projects:	Project title Project leader Project code Project type Razotkrivanje strukture hadrona pomoću tvrdih ekskluzivnih procesa-REVESTRUCTURE Kornelija Passek-Kumerički; Krešimir Kumerički; Lech Szymanowski IP-2019-04-9709 HRZZ The strong interaction at the frontier of knowledge: fundamental research and applications-STRONG-2020 Milorad Korolija; Damir Bosnar; Krešimir Kumerički; Kornelija Passek-Kumerički 824093 EK
Depositing User:	Sanja Jurković
Date Deposited:	30 Apr 2025 10:18
URI:	http://fulir.irb.hr/id/eprint/9785
DOI:	10.5506/APhysPolBSupp.16.5-A16

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