Abstract
Exclusive photoproduction of a γ ρ pair in the kinematics where the pair has a large invariant mass and the final nucleon has a small transverse momentum is described in the collinear factorization framework. The scattering amplitude is calculated at leading order in α s and the differential cross sections for the process where the ρ−meson is either longitudinally or transversely polarized are estimated in the kinematics of the JLab 12-GeV experiments.
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04 October 2018
An unfortunate misprint in our numerical code has led to an overestimate of the cross section for the exclusive photoproduction of a ? ?L pair in the kinematics where the pair has a large invariant mass and the final nucleon has a small transverse momentum, described in the collinear factorization framework. The rates are thus expected to be smaller but the possibility to disentangle the transversity GPDs through the process where the ??meson is transversely polarized is enhanced.
04 October 2018
An unfortunate misprint in our numerical code has led to an overestimate of the cross section for the exclusive photoproduction of a ? ?L pair in the kinematics where the pair has a large invariant mass and the final nucleon has a small transverse momentum, described in the collinear factorization framework. The rates are thus expected to be smaller but the possibility to disentangle the transversity GPDs through the process where the ??meson is transversely polarized is enhanced.
04 October 2018
An unfortunate misprint in our numerical code has led to an overestimate of the cross section for the exclusive photoproduction of a ? ?L pair in the kinematics where the pair has a large invariant mass and the final nucleon has a small transverse momentum, described in the collinear factorization framework. The rates are thus expected to be smaller but the possibility to disentangle the transversity GPDs through the process where the ??meson is transversely polarized is enhanced.
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Boussarie, R., Pire, B., Szymanowski, L. et al. Exclusive photoproduction of a γ ρ pair with a large invariant mass. J. High Energ. Phys. 2017, 54 (2017). https://doi.org/10.1007/JHEP02(2017)054
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DOI: https://doi.org/10.1007/JHEP02(2017)054