${{\mathit \Xi}}$ BARYONS($\mathit S$ = $-2$, $\mathit I$ = 1/2) ${{\mathit \Xi}^{0}}$ = ${\mathit {\mathit u}}$ ${\mathit {\mathit s}}$ ${\mathit {\mathit s}}$, ${{\mathit \Xi}^{-}}$ = ${\mathit {\mathit d}}$ ${\mathit {\mathit s}}$ ${\mathit {\mathit s}}$ INSPIRE search

#### ${{\boldsymbol \Xi}{(2030)}}$

$I(J^P)$ = $1/2({5\over~2}^{?})$
The evidence for this state has been much improved by HEMINGWAY 1977 , who see an eight standard deviation enhancement in ${{\mathit \Sigma}}{{\overline{\mathit K}}}$ and a weaker coupling to ${{\mathit \Lambda}}{{\overline{\mathit K}}}$ . ALITTI 1968 and HEMINGWAY 1977 observe no signals in the ${{\mathit \Xi}}{{\mathit \pi}}{{\mathit \pi}}$ (or ${{\mathit \Xi}{(1530)}}{{\mathit \pi}}$ ) channel, in contrast to DIBIANCA 1975 . The decay (${{\mathit \Lambda}}/{{\mathit \Sigma}}$) ${{\overline{\mathit K}}}{{\mathit \pi}}$ reported by BARTSCH 1969 is also not confirmed by HEMINGWAY 1977 . A moments analysis of the HEMINGWAY 1977 data indicates at a level of three standard deviations that $\mathit J$ ${}\geq{}{}^{}5/2{}^{}$.
 ${{\mathit \Xi}{(2030)}}$ MASS $2025 \pm5$ MeV
 ${{\mathit \Xi}{(2030)}}$ WIDTH $20 {}^{+15}_{-5}$ MeV
 $\Gamma_{1}$ ${{\mathit \Lambda}}{{\overline{\mathit K}}}$ $\sim{}20\%$ 585
 $\Gamma_{2}$ ${{\mathit \Sigma}}{{\overline{\mathit K}}}$ $\sim{}80\%$ 529
 $\Gamma_{3}$ ${{\mathit \Xi}}{{\mathit \pi}}$ $small$ 574
 $\Gamma_{4}$ ${{\mathit \Xi}{(1530)}}{{\mathit \pi}}$ $small$ 416
 $\Gamma_{5}$ ${{\mathit \Xi}}{{\mathit \pi}}{{\mathit \pi}}$ (not ${{\mathit \Xi}{(1530)}}{{\mathit \pi}}$) $small$ 540
 $\Gamma_{6}$ ${{\mathit \Lambda}}{{\overline{\mathit K}}}{{\mathit \pi}}$ $small$ 499
 $\Gamma_{7}$ ${{\mathit \Sigma}}{{\overline{\mathit K}}}{{\mathit \pi}}$ $small$ 428
 FOOTNOTES