Exclusive photoproduction of a $\gamma\,\rho$ pair with a large invariant mass
R. Boussarie, B. Pire, L. Szymanowski, S. Wallon
TL;DR
This paper analyzes the exclusive photoproduction of a gamma-rho pair with large invariant mass using collinear factorization, providing theoretical predictions relevant for JLab 12-GeV experiments.
Contribution
It introduces a leading-order calculation of the scattering amplitude for gamma-rho pair production with specific kinematics in the collinear framework.
Findings
Differential cross sections estimated for longitudinally polarized rho.
Results applicable to JLab 12-GeV experimental conditions.
Theoretical framework established for future experimental comparison.
Abstract
Exclusive photoproduction of a 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 and the differential cross sections for the process where the meson is either longitudinally or transversely polarized are estimated in the kinematics of the JLab 12-GeV experiments.
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