Final States with Two or More Strange Particles from4.25−BeVcK−pInteractions
Abstract
Final states with two or more strange particles produced by $4.25\ensuremath{-}\frac{\mathrm{BeV}}{c}$ ${K}^{\ensuremath{-}}p$ interactions were studied in a 5.3-event/\ensuremath{\mu}b exposure. A search for ${\ensuremath{\Xi}}^{*}$ resonances found only the ${\ensuremath{\Xi}}^{*}(1530)$ produced in measurable amounts. The data suggest a ${\ensuremath{\Xi}}^{*}(2225)$ with isotopic spin $\frac{3}{2}$. The mass of the $\ensuremath{\varphi}$ meson is measured to be 1021.5\ifmmode\pm\else\textpm\fi{}0.8 MeV from $\ensuremath{\Lambda}\ensuremath{\varphi}$ events with $\ensuremath{\varphi}\ensuremath{\rightarrow}K_{1}^{}{}_{}{}^{0}K_{2}^{}{}_{}{}^{0}$. This result is 3 MeV higher than that found in other experiments using stopping ${K}^{+}$ and ${K}^{\ensuremath{-}}$ mesons from $\ensuremath{\varphi}\ensuremath{\rightarrow}{K}^{+}{K}^{\ensuremath{-}}$. The results of a search for other meson and baryon resonances are presented.
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