Coherent production of $K^{*+}(890)$ on nuclei and determination of an upper limit for the radiative decay width $\Gamma (K^{*+} \rightarrow K^{+}\gamma )$

The authors have observed the coherent production of K*/sup +/ (890) on nuclei ranging from C to Pb at 10, 13 and 16 GeV/c. Fitting a model of coherent production, including strong and electromagnetic interactions and their interference, to the measured coherent production cross section they find the strong contribution to the dominant and determine the upper limit of the radiative decay width Gamma (K*/sup +/ to K/sup +/ gamma )<80 keV with 95% confidence. (17 refs).