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${{\mathit \Sigma}}$ 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

${{\mathit \Sigma}{(1900)}}$ $I(J^P)$ = $1(1/2^{-})$

${{\mathit \Sigma}{(1900)}}$ POLE POSITION

REAL PART   $1936 \pm10$

$-2{\times }$IMAGINARY PART   $150 \pm25$

${{\mathit \Sigma}{(1900)}}$ POLE RESIDUES

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Sigma}{(1900)}}$ $\rightarrow$ ${{\mathit N}}{{\overline{\mathit K}}}$   $0.45 \pm0.09$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Sigma}{(1900)}}$ $\rightarrow$ ${{\mathit \Sigma}}{{\mathit \pi}}$   $0.38 \pm0.08$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Sigma}{(1900)}}$ $\rightarrow$ ${{\mathit \Sigma}}{{\mathit \eta}}$   $0.03 \pm0.01$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Sigma}{(1900)}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit \pi}}$   $0.14 \pm0.05$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Sigma}{(1900)}}$ $\rightarrow$ ${{\mathit \Xi}}{{\mathit K}}$   $0.08 \pm0.05$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Sigma}{(1900)}}$ $\rightarrow$ ${{\mathit \Sigma}{(1385)}}{{\mathit \pi}}$   $0.16 \pm0.05$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Sigma}{(1900)}}$ $\rightarrow$ ${{\mathit \Lambda}{(1520)}}{{\mathit \pi}}$   $0.04 \pm0.02$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Sigma}{(1900)}}$ $\rightarrow$ ${{\mathit \Delta}}{{\overline{\mathit K}}}$   $0.11 \pm0.04$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Sigma}{(1900)}}$ $\rightarrow$ ${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$ , $\mathit S$=1/2, ${\mathit S}{\mathrm -wave}$   $0.17 \pm0.06$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Sigma}{(1900)}}$ $\rightarrow$ ${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$ , $\mathit S$=3/2, ${\mathit D}{\mathrm -wave}$   $0.05 \pm0.04$

${{\mathit \Sigma}{(1900)}}$ MASS   $1900\text{ to }1950\text{ }(\approx1925) $ MeV

${{\mathit \Sigma}{(1900)}}$ WIDTH   $140\text{ to }190\text{ }(\approx165) $ MeV

${{\mathit \Sigma}{(1900)}}$ Decay Modes
Mode   Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/ Conf. Level P(MeV/c)   $\Gamma_{1}$ ${{\mathit N}}{{\overline{\mathit K}}}$   0.40 to 0.55 to 0.70 626   $\Gamma_{2}$ ${{\mathit \Sigma}}{{\mathit \pi}}$   0.10 to 0.25 to 0.40 584   $\Gamma_{3}$ ${{\mathit \Sigma}}{{\mathit \eta}}$   $(1.0\pm{1.0})\%$ 391   $\Gamma_{4}$ ${{\mathit \Lambda}}{{\mathit \pi}}$   $(6.0\pm{2.0})\%$ 630   $\Gamma_{5}$ ${{\mathit \Xi}}{{\mathit K}}$   $(3.0\pm{2.0})\%$ 298   $\Gamma_{6}$ ${{\mathit \Sigma}{(1385)}}{{\mathit \pi}}$   $(7.0\pm{3.0})\%$ 451   $\Gamma_{7}$ ${{\mathit \Lambda}{(1520)}}{{\mathit \pi}}$   342   $\Gamma_{8}$ ${{\mathit \Delta}}{{\overline{\mathit K}}}$   $(2.5\pm{1.0})\%$ 394   $\Gamma_{9}$ ${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$ , $\mathit S$=1/2 , ${\mathit S}{\mathrm -wave}$   $(7.0\pm{3.0})\%$ 299   $\Gamma_{10}$ ${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$ , $\mathit S$=3/2 , ${\mathit D}{\mathrm -wave}$   299
FOOTNOTES