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

${{\boldsymbol \Lambda}{(1800)}}$ $I(J^P)$ = $0(1/2^{-})$

This is the second resonance in the ${\mathit S}_{\mathrm 01}{\mathrm wave}$, the first being the ${{\mathit \Lambda}{(1670)}}$.
${{\boldsymbol \Lambda}{(1800)}}$ POLE POSITION
REAL PART
$-2{\times }$IMAGINARY PART
${{\mathit \Lambda}{(1800)}}$ MASS   $1720\text{ to }1850\text{ }(\approx1800) $ MeV 
${{\mathit \Lambda}{(1800)}}$ WIDTH   $200\text{ to }400\text{ }(\approx300) $ MeV 
$\Gamma_{1}$ ${{\mathit N}}{{\overline{\mathit K}}}$ 25$-40\%$528
$\Gamma_{2}$ ${{\mathit \Sigma}}{{\mathit \pi}}$ seen494
$\Gamma_{3}$ ${{\mathit \Sigma}{(1385)}}{{\mathit \pi}}$ seen349
$\Gamma_{4}$ ${{\mathit \Lambda}}{{\mathit \eta}}$ $(6\pm{5})\%$326
$\Gamma_{5}$ ${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$ seen-1
$\Gamma_{6}$ ${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$ , $\mathit S$=1/2, ${\mathit S}{\mathrm -wave}$ -1
$\Gamma_{7}$ ${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$ , $\mathit S$=3/2, ${\mathit D}{\mathrm -wave}$ -1