${{\boldsymbol \Xi}}$ BARYONS($\boldsymbol S$ = $-2$, $\boldsymbol I$ = 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

# ${{\boldsymbol \Xi}{(1820)}}$ $I(J^P)$ = $1/2(3/2^{-})$

The clearest evidence is an 8-standard-deviation peak in ${{\mathit \Lambda}}{{\mathit K}^{-}}$ seen by GAY 1976C. TEODORO 1978 favors $\mathit J = 3/2$, but cannot make a parity discrimination. BIAGI 1987C is consistent with $\mathit J = 3/2$ and favors negative parity for this $\mathit J$ value.
 ${{\mathit \Xi}{(1820)}}$ MASS $1823 \pm5$ MeV
 ${{\mathit \Xi}{(1820)}}$ WIDTH $24 {}^{+15}_{-10}$ MeV