Accessing Generalized Parton Distributions in Exclusive Photoproduction of a $\gamma \rho$ Pair with a Large Invariant Mass

TL;DR

This paper proposes a method to access generalized parton distributions through the exclusive photoproduction of a gamma-rho pair with large invariant mass at JLab 12-GeV, demonstrating its feasibility.

Contribution

It introduces a novel approach to probe GPDs via gamma-rho pair production with specific kinematics, expanding experimental techniques.

Findings

Feasibility of measuring gamma-rho production at JLab 12-GeV.

Potential to access GPDs through this process.

Kinematic conditions suitable for the measurement.

Abstract

We propose and study the photoproduction of a $\gamma\,\rho$ pair with a large invariant mass and a small transverse momentum of the final nucleon, as a way to access generalized parton distributions. In the kinematics of JLab 12-GeV, we demonstrate the feasibility of this measurement.