SU(3) Comparison ofϕandK(890)Production

Abstract

We have utilized SU(3) invariance to relate the reactions $K^{-}p\to (\Lambda ,{\Sigma }^0)\varphi$ with ${\pi }^{-}p\to (\Lambda ,{\Sigma }^0)K\left(890\right)\mathrm{}$ in the peripheral region. We find that in all observable distributions, including the baryon polarization and the vector-meson density-matrix elements, the data are in good agreement with the SU(3) predictions. These observations lead us to conclude that potential sources for the symmetry breaking, such as external-mass—dependent factors or absorptive effects, do not significantly affect the simple SU(3) picture.