Probing Generalized Parton Distributions through the photoproduction of a gamma pi pair - Archive ouverte HAL
Pré-Publication, Document De Travail Année : 2019

Probing Generalized Parton Distributions through the photoproduction of a gamma pi pair

Résumé

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. 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.

Dates et versions

hal-01968290 , version 1 (02-01-2019)

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G. Duplančić, K. Passek-Kumerički, B. Pire, L. Szymanowski, S. Wallon. Probing Generalized Parton Distributions through the photoproduction of a gamma pi pair. 2019. ⟨hal-01968290⟩
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