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arXiv · 1103.2097

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

Murat M. Kaskulov·Ulrich Mosel
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Abstract

Photoproduction of neutral pseudoscalar mesons $\pi^0,\eta(547)$ and $\eta'(958)$ 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 $\eta'$ photoproduction off nuclei are further discussed. We also give predictions for the higher energies available at the JLAB upgrade.

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Murat M. Kaskulov, Ulrich Mosel. 2011-03-10. Primakoff production of $\pi^0$, $\eta$ and $\eta'$ in the Coulomb field of a nucleus. https://doi.org/10.1103/physrevc.84.065206

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