%0 Journal Article
%T Measurement of $K^*(892)^0$ and $K^0$ mesons in Al+Al collisions at 1.9$A$ GeV
%A X. Lopez
%A N. Herrmann
%A K. Piasecki
%J Physics
%D 2010
%I arXiv
%R 10.1103/PhysRevC.81.061902
%X New measurement of sub-threshold $K^*(892)^0$ and $K^0$ production is presented. The experimental data complete the measurement of strange particles produced in Al+Al collisions at 1.9$A$ GeV measured with the FOPI detector at SIS/GSI. The $K^*(892)^0$ / $K^0$ yield ratio is found to be $0.0315\pm 0.006 (\mathrm{stat.})\pm 0.012 (\mathrm{syst.})$ and is in good agreement with the UrQMD model prediction. These measurements provide information on in-medium cross section of $K^+$ - $\pi^-$ fusion which is the dominant process on sub-threshold $K^*(892)^0$ production.
%U http://arxiv.org/abs/1006.1905v1