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

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

${{\boldsymbol \Lambda}{(1800)}}$ POLE POSITION
REAL PART   $1809 \pm9$ MeV 
$-2{\times }$IMAGINARY PART   $205 \pm16$ MeV 
${{\boldsymbol \Lambda}{(1800)}}$ POLE RESIDUES
Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Lambda}{(1800)}}$ $\rightarrow$ ${{\mathit N}}{{\overline{\mathit K}}}$   $0.34 \pm0.07$  
Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Lambda}{(1800)}}$ $\rightarrow$ ${{\mathit \Sigma}}{{\mathit \pi}}$   $0.30 \pm0.06$  
Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Lambda}{(1800)}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit \eta}}$   $0.06 \pm0.03$  
Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Lambda}{(1800)}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit \sigma}}$   $0.24 \pm0.05$  
Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Lambda}{(1800)}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit \omega}}$ , $\mathit S$=1/2, ${\mathit S}{\mathrm -wave}$   $0.12 \pm0.04$  
Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Lambda}{(1800)}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit \omega}}$ , $\mathit S$=3/2, ${\mathit D}{\mathrm -wave}$   $0.08 \pm0.03$  
Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Lambda}{(1800)}}$ $\rightarrow$ ${{\mathit \Sigma}{(1385)}}{{\mathit \pi}}$   $0.16 \pm0.06$  
Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Lambda}{(1800)}}$ $\rightarrow$ ${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$ , $\mathit S$=1/2, ${\mathit S}{\mathrm -wave}$   $0.18 \pm0.06$  
Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Lambda}{(1800)}}$ $\rightarrow$ ${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$ , $\mathit S$=3/2, ${\mathit D}{\mathrm -wave}$   $0.09 \pm0.07$  
${{\mathit \Lambda}{(1800)}}$ MASS   $1750\text{ to }1850\text{ }(\approx1800) $ MeV 
${{\mathit \Lambda}{(1800)}}$ WIDTH   $150\text{ to }250\text{ }(\approx200) $ MeV 
$\Gamma_{1}$ ${{\mathit N}}{{\overline{\mathit K}}}$  25$-40\%$ 528
$\Gamma_{2}$ ${{\mathit \Sigma}}{{\mathit \pi}}$  seen 494
$\Gamma_{3}$ ${{\mathit \Lambda}}{{\mathit \sigma}}$  $(15\pm{4})\%$
$\Gamma_{4}$ ${{\mathit \Sigma}{(1385)}}{{\mathit \pi}}$  seen 349
$\Gamma_{5}$ ${{\mathit \Lambda}}{{\mathit \eta}}$  0.01 to 0.10 326
$\Gamma_{6}$ ${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$  seen -1
$\Gamma_{7}$ ${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$ , $\mathit S$=1/2, ${\mathit S}{\mathrm -wave}$  -1
$\Gamma_{8}$ ${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$ , $\mathit S$=3/2, ${\mathit D}{\mathrm -wave}$  -1