ΞResonances inK−p→ΞπKAT 2.87 GeV/c

Abstract

Evidence is presented for four $\Xi$ resonances in the reaction $K^{-}p\to {\Xi }^{-}{\pi }^{+}{K}^0$. In addition to the well known $\Xi \mathrm{}\left(1530\right)\mathrm{}$, significant structures are observed in the $\Xi \pi$ system at masses of 1630, 1800, and 1960 MeV, although the latter two are not statistically distinguishable from a single broad structure at 1950 MeV. No significant enhancements at these masses are observed in the ${\Xi }^{-}{\pi }^0{K}^{+}$ final state.