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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

${{\mathit \Sigma}{(2110)}}$ $I(J^P)$ = $1(1/2^{-})$

was ${{\mathit \Sigma}{(2160)}}$

${{\mathit \Sigma}{(2110)}}$ POLE POSITION

REAL PART   $2158 \pm25$ MeV

$-2{\times }$IMAGINARY PART   $300 {}^{+300}_{-60}$ MeV

${{\mathit \Sigma}{(2110)}}$ POLE RESIDUES

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Sigma}{(2110)}}$ $\rightarrow$ ${{\mathit N}}{{\overline{\mathit K}}}$   $0.29 \pm0.08$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Sigma}{(2110)}}$ $\rightarrow$ ${{\mathit \Sigma}}{{\mathit \pi}}$   $0.14 \pm0.04$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Sigma}{(2110)}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit \pi}}$   $0.39 \pm0.08$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Sigma}{(2110)}}$ $\rightarrow$ ${{\mathit \Xi}}{{\mathit K}}$   $0.05 \pm0.02$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Sigma}{(2110)}}$ $\rightarrow$ ${{\mathit \Lambda}{(1520)}}{{\mathit \pi}}$   $0.025 \pm0.015$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Sigma}{(2110)}}$ $\rightarrow$ ${{\mathit \Sigma}{(1385)}}{{\mathit \pi}}$   $0.03 \pm0.02$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Sigma}{(2110)}}$ $\rightarrow$ ${{\mathit \Delta}}{{\overline{\mathit K}}}$   $0.04 \pm0.02$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Sigma}{(2110)}}$ $\rightarrow$ ${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$ , ${\mathit S}{\mathrm -wave}$   $0.09 \pm0.03$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Sigma}{(2110)}}$ $\rightarrow$ ${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$ , ${\mathit D}{\mathrm -wave}$   $0.04 \pm0.03$

${{\mathit \Sigma}{(2110)}}$ MASS   $2105 \pm50$ MeV (S = 3.4)

${{\mathit \Sigma}{(2110)}}$ WIDTH   $313 {}^{+120}_{-50}$ MeV

${{\mathit \Sigma}{(2110)}}$ Decay Modes
Mode   Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/ Conf. Level P(MeV/c)   $\Gamma_{1}$ ${{\mathit N}}{{\overline{\mathit K}}}$   $(29\pm{7})\%$ 754   $\Gamma_{2}$ ${{\mathit \Sigma}}{{\mathit \pi}}$   $(7.0\pm{2.0})\%$ 708   $\Gamma_{3}$ ${{\mathit \Lambda}}{{\mathit \pi}}$   $(54\pm{12})\%$ 749   $\Gamma_{4}$ ${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$ , ${\mathit S}{\mathrm -wave}$   $(3.0\pm{1.0})\%$ 520   $\Gamma_{5}$ ${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$ , ${\mathit D}{\mathrm -wave}$   520
FOOTNOTES