Measurement of the $K^{0/emph>\mathrm{}\mathrm{}\left(896\right)\mathrm{}}$ radiative width

Primakoff production of the $K^{0\mathrm{*}}$(896) by incident $K_L$’s was observed in the energy range 100–200 GeV. Production from Cu and Pb targets was measured simultaneously leading to a new value for the $K^{0\mathrm{*}}$(896) radiative width Γ($K^{0\mathrm{*}}$(896)→$K^0$+γ) of 116.5±9.9 keV. The result agrees with a previous determination while being considerably more precise and allows for more stringent tests of quark-model relations among the radiative widths of the low-lying vector mesons.