1
From a fit to the ${{\mathit \Sigma}^{+}}{{\mathit K}^{-}}$ spectrum.
2
From a coupled-channel analysis of the ${{\mathit \Sigma}^{+}}{{\mathit K}^{-}}$ and ${{\mathit \Lambda}}{{\overline{\mathit K}}^{0}}$ spectra.
References:
ADAMOVICH
1998
EPJ C5 621
First Observation of the ${{\mathit \Xi}^{-}}$ ${{\mathit \pi}^{+}}$ Decay Mode of the ${{\mathit \Xi}{(1690)}^{0}}$ Hyperon
DIONISI
1978
PL 80B 145
An Enhancement at the ${{\mathit \Sigma}}$ ${{\overline{\mathit K}}}$ Threshold 1680 MeV Observed in ${{\mathit K}^{-}}$ ${{\mathit p}}$ Reactions at 4.2 ${\mathrm {GeV/}}\mathit c$
