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

${{\boldsymbol \Sigma}{(1880)}}$

$I(J^P)$ = $1(1/2^{+})$ 
A ${\mathit P}_{\mathrm 11}$ resonance is suggested by several partial-wave analyses, but with wide variations in the mass and other parameters. We list here all claims which lie well above the ${\mathit P}_{\mathrm 11}{{\mathit \Sigma}{(1770)}}$.
${{\boldsymbol \Sigma}{(1880)}}$ POLE POSITION
REAL PART
 
$-2{\times }$IMAGINARY PART
 
${{\mathit \Sigma}{(1880)}}$ MASS   $1820\text{ to }1940\text{ }(\approx1880) $ MeV 
 
${{\mathit \Sigma}{(1880)}}$ WIDTH   $100\text{ to }300\text{ }(\approx200) $ MeV 
 
$\Gamma_{1}$ ${{\mathit N}}{{\overline{\mathit K}}}$  0.10 to 0.20 to 0.30 592
 
$\Gamma_{2}$ ${{\mathit \Lambda}}{{\mathit \pi}}$  599
 
$\Gamma_{3}$ ${{\mathit \Sigma}}{{\mathit \pi}}$  552
 
$\Gamma_{4}$ ${{\mathit \Lambda}{(1520)}}{{\mathit \pi}}$ , ${\mathit D}{\mathrm -wave}$  $(2.0\pm{1.0})\%$ 302
 
$\Gamma_{5}$ ${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$ , $\mathit S$=1/2, ${\mathit P}{\mathrm -wave}$  215
 
$\Gamma_{6}$ ${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$ , $\mathit S$=3/2, ${\mathit P}{\mathrm -wave}$  215
 
$\Gamma_{7}$ ${{\mathit \Delta}{(1232)}}{{\overline{\mathit K}}}$ , ${\mathit P}{\mathrm -wave}$  $(39\pm{8})\%$ 343
 
FOOTNOTES