K¯*0(890)decay density matrix elements and partial conservation of strangeness-changing vector current

Abstract

We show that the zeros in the density matrix elements ${\ensuremath{\rho}}_{1,\ensuremath{-}1}^{t}$ and $\mathrm{Re}{\ensuremath{\rho}}_{10}^{s}$ for ${K}^{\ensuremath{-}}p\ensuremath{\rightarrow}{{\overline{K}}^{*}}^{0}n$ (${K}^{+}n\ensuremath{\rightarrow}{{K}^{*}}^{0}p$) are correlated and imply fundamental relationships among the Ball amplitudes following from partial conservation of strangeness-changing vector currents and the smoothness hypothesis.