Meson production in high-energy electron-nucleus scattering

Abstract

Pseudoscalar mesons can be produced and studied in high-energy electron-nucleus scattering. We review and extend our previous analysis of meson production in the nuclear Coulomb field. The P → γγ decay rates are most directly determined for mesons produced in the double-Coulomb region where both photons are nearly real, and provided the background-hadronic contribution remains small. The larger the mass of the meson the higher the electron energy needed to assure such a condition.

Test of fundamental symmetries via the Primakoff effect

“…Inspired by the PrimEx experiment, there have been two independent calculations of photoproduction on proton [19]. The virtual Primakoff production in high-energy electron-nucleus scattering has been calculated recently for the PrimEx kinematics [20]. These new theoretical developments have laid a solid theoretical ground for the era of precision Primakoff experiments for the light pseudoscalar mesons.…”