Hard Exclusive Photoproduction of Phi and J/Psi Mesons

TL;DR

This paper calculates the leading-order perturbative contribution to the exclusive photoproduction of Phi and J/Psi mesons at high energy and large scattering angles, providing theoretical insights into these processes.

Contribution

It presents the first leading-order perturbative calculation for the hard exclusive photoproduction of Phi and J/Psi mesons in this kinematic regime.

Findings

Provides explicit formulas for the amplitude of the processes.

Shows the dominance of perturbative contributions at high energies.

Lays groundwork for comparison with experimental data.

Abstract

We calculate the leading-order perturbative contribution to $\gamma p \to M_{V} p$, with $M_V$ being a $\Phi$ or $J/\Psi$ meson, in the kinematic region of large energy and scattering angle.