Journal
ACTA PHYSICA POLONICA B PROCEEDINGS SUPPLEMENT
Volume 12, Issue 4, Pages 855-860Publisher
JAGIELLONIAN UNIV
DOI: 10.5506/APhysPolBSupp.12.855
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Funding
- EU grant RBI-T-WINNING (grant EU H2020 CSA-2015) [692194]
- French grant ANR PARTONS [ANR-12-MONU-0008-01]
- Polish-French collaboration agreement Polonium
- Croatian Science Foundation (HrZZ) project Physics of Standard Model and beyond [HrZZ5169]
- National Science Centre, Poland (NCN) [2017/26/M/ST2/01074]
- French LABEX P2IO
- French GDR QCD
- Agence Nationale de la Recherche (ANR) [ANR-12-MONU-0008] Funding Source: Agence Nationale de la Recherche (ANR)
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We study in the framework of collinear QCD factorization the photoproduction of a gamma pi pair with a large invariant mass and a small transverse momentum, as a new way to access generalized parton distributions (GPDs). In the kinematics of JLab 12 GeV, we demonstrate the feasibility of this measurement and show the extreme sensitivity of the unpolarized cross section to the axial quark GPDs.
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