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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 search

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

$I(J^P)$ = $1(1/2^{-})$

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

$-2{\times }$IMAGINARY PART

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

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

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

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

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

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

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

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

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

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

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

${{\mathit \Sigma}{(1900)}}$ MASS

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

${{\mathit \Sigma}{(1900)}}$ WIDTH

$140\text{ to }190\text{ }(\approx165) $ MeV

${{\mathit \Sigma}{(1900)}}$ Decay Modes

${{\mathit N}}{{\overline{\mathit K}}}$

0.40 to 0.55 to 0.70

${{\mathit \Sigma}}{{\mathit \pi}}$

0.10 to 0.25 to 0.40

${{\mathit \Sigma}}{{\mathit \eta}}$

$(1.0\pm{1.0})\%$

${{\mathit \Lambda}}{{\mathit \pi}}$

$(6.0\pm{2.0})\%$

${{\mathit \Xi}}{{\mathit K}}$

$(3.0\pm{2.0})\%$

${{\mathit \Sigma}{(1385)}}{{\mathit \pi}}$

$(7.0\pm{3.0})\%$

${{\mathit \Lambda}{(1520)}}{{\mathit \pi}}$

${{\mathit \Delta}}{{\overline{\mathit K}}}$

$(2.5\pm{1.0})\%$

${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$ , $\mathit S$=1/2 , ${\mathit S}{\mathrm -wave}$

$(7.0\pm{3.0})\%$

${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$ , $\mathit S$=3/2 , ${\mathit D}{\mathrm -wave}$

FOOTNOTES

Except where otherwise noted, content of the 2022 Review of Particle Physics is licensed under a Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license. The publication of the Review of Particle Physics is supported by US DOE, MEXT (Japan), INFN (Italy), JPS and CERN. Individual collaborators receive support for their PDG activities from their respective institutes or funding agencies. © 2022. See LBNL disclaimers.