Photoproduction of NeutralKMesons

Photoproduction of a neutral $K$-meson beam at high energies from hydrogen is computed in terms of a $K^{*}$ vector-meson exchange mechanism corrected for final-state interactions. The results are very encouraging for the intensity of high-energy $K_2$ beams at high-energy electron accelerators. A typical magnitude is 20 μb/sr for a lower limit of the $K^0$ photoproduction differential cross section, at a laboratory peak angle of 2°, for 15-BeV incident photons.