${{\mathit \Lambda}}$ BARYONS
($\mathit S$ = $-1$, $\mathit I$ = 0)
${{\mathit \Lambda}^{0}}$ = ${\mathit {\mathit u}}$ ${\mathit {\mathit d}}$ ${\mathit {\mathit s}}$
INSPIRE   JSON PDGID:
B027

${{\mathit \Lambda}{(2085)}}$

$I(J^P)$ = $0(7/2^{+})$ 

was ${{\mathit \Lambda}{(2020)}}$
In LITCHFIELD 1971, need for the state rests solely on a possibly inconsistent polarization measurement at 1.784 ${\mathrm {GeV/}}\mathit c$. HEMINGWAY 1975 does not require this state. GOPAL 1977 does not need it in either ${{\mathit N}}{{\overline{\mathit K}}}$ or ${{\mathit \Sigma}}{{\mathit \pi}}$. With new ${{\mathit K}^{-}}{{\mathit n}}$ angular distributions included, DECLAIS 1977 sees it. However, this and other new data are included in GOPAL 1980 and the state is not required. BACCARI 1977 weakly supports it.
${{\mathit \Lambda}{(2085)}}$ POLE POSITION
REAL PART
$-2{\times }$IMAGINARY PART
${{\mathit \Lambda}{(2085)}}$ POLE RESIDUES
Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Lambda}{(2085)}}$ $\rightarrow$ ${{\mathit N}}{{\overline{\mathit K}}}$
Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Lambda}{(2085)}}$ $\rightarrow$ ${{\mathit \Sigma}}{{\mathit \pi}}$
Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Lambda}{(2085)}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit \eta}}$
Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Lambda}{(2085)}}$ $\rightarrow$ ${{\mathit \Sigma}{(1385)}}{{\mathit \pi}}$ , ${\mathit F}{\mathrm -wave}$
Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Lambda}{(2085)}}$ $\rightarrow$ ${{\mathit \Sigma}{(1385)}}{{\mathit \pi}}$ , ${\mathit H}{\mathrm -wave}$
${{\mathit \Lambda}{(2085)}}$ MASS   $\approx2020$ MeV 
 
${{\mathit \Lambda}{(2085)}}$ WIDTH
$\Gamma_{1}$ ${{\mathit N}}{{\overline{\mathit K}}}$   695
 
$\Gamma_{2}$ ${{\mathit \Sigma}}{{\mathit \pi}}$   651
 
$\Gamma_{3}$ ${{\mathit \Lambda}}{{\mathit \eta}}$   550
 
$\Gamma_{4}$ ${{\mathit \Sigma}{(1385)}}{{\mathit \pi}}$ , ${\mathit F}{\mathrm -wave}$   524
 
$\Gamma_{5}$ ${{\mathit \Sigma}{(1385)}}{{\mathit \pi}}$ , ${\mathit H}{\mathrm -wave}$   524
 
$\Gamma_{6}$ ${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$ , $\mathit S$=1/2   $(30\pm{9})\%$ 428
 
$\Gamma_{7}$ ${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$ , $\mathit S$=1/2, ${\mathit F}{\mathrm -wave}$   428
 
$\Gamma_{8}$ ${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$ , $\mathit S$=3/2, ${\mathit F}{\mathrm -wave}$   428
 
$\Gamma_{9}$ ${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$ , $\mathit S$=3/2, ${\mathit H}{\mathrm -wave}$   428
 
$\Gamma_{10}$ ${{\mathit \Lambda}}{{\mathit \omega}}$   340
 
FOOTNOTES