EPJ Web of Conferences
Volume 112, 20166th International Conference on Physics Opportunities at an Electron-Ion Collider
|Number of page(s)||6|
|Section||Spin and 3D Structure|
|Published online||21 March 2016|
Revealing transversity GPDs through the photoproduction of a photon and a ρ meson
1 Laboratoire de Physique Théorique, UMR 8627, CNRS, Univ. Paris Sud, Université Paris-Saclay, 91405 Orsay, France
2 Centre de physique théorique, École Polytechnique, CNRS, Université Paris-Saclay, 91128 Palaiseau, France
3 National Centre for Nuclear Research (NCBJ), Warsaw, Poland
4 UPMC Univ. Paris 06, Faculté de Physique, 75252 Paris, France
Published online: 21 March 2016
Photoproduction of a pair of particles with large invariant mass is a natural extension of collinear QCD factorization theorems which have been much studied for deeply virtual Compton scattering and deeply virtual meson production. We discuss the production of a photon and a meson, where the wide angle Compton scattering on a meson subprocess factorizes from generalized parton distribution. We calculate at dominant twist and leading order in αs, the production cross-section of a transversely polarized ρ meson which is sensitive to chiral-odd GPDs, and show that it may be measurable in near future JLab experiments.
© Owned by the authors, published by EDP Sciences, 2016
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