Primakoff production of ${\pi }^0$, $\eta$ and ${\eta }^{\prime }$ in the Coulomb field of a nucleus

Abstract

Photoproduction of neutral pseudoscalar mesons ${\pi }^0,\eta (547)$ and ${\eta }^{\prime }(958)$ in the Coulomb field of an atomic nucleus is studied using a model which describes the Primakoff and nuclear parts of the production amplitude. At high energies the nuclear background is dominated by the exchange of $C$-parity odd Regge trajectories. In the coherent production the isospin filtering makes the $\omega (782)$ a dominant trajectory. The calculations are in agreement with ${\pi }^0$ data from JLAB provided the photon shadowing and final state interactions of mesons are taken into account. The kinematic conditions which allow to study the Primakoff effect in $\eta$ and ${\eta }^{\prime }$ photoproduction off nuclei are further discussed. We also give predictions for the higher energies available at the JLAB upgrade.

15 pages, 14 figures, discussion added, final version to be published in Phys. Rev. C

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Cited by in corpus (10)

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• Energy Dependent Isospin Asymmetry in Mean-Field Dynamics
• Search for the glueball content of hadrons in gamma p interactions at GlueX
• Pion-induced production of the $Z_c(3900)$ off a nuclear target
• Photoproductions of $f_1(1285)$ and ${\eta }^{\prime }(958)$ from the analysis of CLAS data with the Primakoff effect at high energies
• Vector exchanges in production of light meson pairs and elementary atoms
• Meson production in high-energy electron-nucleus scattering
• Photoproduction of pion pairs at high energy and small angles