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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

${{\boldsymbol \Sigma}{(1910)}}$ $I(J^P)$ = $1(3/2^{-})$

was ${{\mathit \Sigma}{(1940)}}$

For results published before 1974 (they are now obsolete), see our 1982 edition Physics Letters 111B 1 (1982). Not all analyses require this state. It is not required by the GOYAL 1977 analysis of ${{\mathit K}^{-}}$ ${{\mathit n}}$ $\rightarrow$ ${{\mathit \Sigma}{\mathit \pi}}$ nor by the GOPAL 1980 analysis of ${{\mathit K}^{-}}$ ${{\mathit n}}$ $\rightarrow$ ${{\mathit K}^{-}}{{\mathit n}}$ . See also HEMINGWAY 1975 .

${{\boldsymbol \Sigma}{(1910)}}$ POLE RESIDUES

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Sigma}{(1910)}}$ $\rightarrow$ ${{\mathit N}}{{\overline{\mathit K}}}$   $0.03 \pm0.02$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Sigma}{(1910)}}$ $\rightarrow$ ${{\mathit \Sigma}}{{\mathit \pi}}$   $0.16 \pm0.04$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Sigma}{(1910)}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit \pi}}$   $0.04 \pm0.03$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Sigma}{(1910)}}$ $\rightarrow$ ${{\mathit \Xi}}{{\mathit \pi}}$   $0.01 \pm0.01$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Sigma}{(1910)}}$ $\rightarrow$ ${{\mathit \Lambda}{(1520)}}{{\mathit \pi}}$ , ${\mathit P}{\mathrm -wave}$   $0.01 \pm0.01$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Sigma}{(1910)}}$ $\rightarrow$ ${{\mathit \Lambda}{(1520)}}{{\mathit \pi}}$ , ${\mathit F}{\mathrm -wave}$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Sigma}{(1910)}}$ $\rightarrow$ ${{\mathit \Delta}}{{\overline{\mathit K}}}$ , ${\mathit S}{\mathrm -wave}$   $0.03 \pm0.01$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Sigma}{(1910)}}$ $\rightarrow$ ${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$ , $\mathit S$=3/2, ${\mathit S}{\mathrm -wave}$   $0.03 \pm0.02$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Sigma}{(1910)}}$ $\rightarrow$ ${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$ , $\mathit S$=1/2, ${\mathit D}{\mathrm -wave}$   $0.02 \pm0.01$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Sigma}{(1910)}}$ $\rightarrow$ ${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$ , $\mathit S$=3/2, ${\mathit D}{\mathrm -wave}$   $0.01 \pm0.01$

${{\mathit \Sigma}{(1910)}}$ MASS   $1870\text{ to }1950\text{ }(\approx1910) $ MeV

${{\mathit \Sigma}{(1910)}}$ WIDTH   $150\text{ to }300\text{ }(\approx220) $ MeV

${{\boldsymbol \Sigma}{(1910)}}$ Decay Modes
Mode   Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/ Conf. Level P(MeV/c)   $\Gamma_{1}$ ${{\mathit N}}{{\overline{\mathit K}}}$   0.01 to 0.02 to 0.05 615   $\Gamma_{2}$ ${{\mathit \Lambda}}{{\mathit \pi}}$   $(6\pm{4})\%$ 619   $\Gamma_{3}$ ${{\mathit \Sigma}}{{\mathit \pi}}$   $(86\pm{21})\%$ 574   $\Gamma_{4}$ ${{\mathit \Sigma}{(1385)}}{{\mathit \pi}}$   seen 439   $\Gamma_{5}$ ${{\mathit \Xi}}{{\mathit K}}$   277   $\Gamma_{6}$ ${{\mathit \Sigma}{(1385)}}{{\mathit \pi}}$ , ${\mathit S}{\mathrm -wave}$   439   $\Gamma_{7}$ ${{\mathit \Lambda}{(1520)}}{{\mathit \pi}}$   seen 329   $\Gamma_{8}$ ${{\mathit \Lambda}{(1520)}}{{\mathit \pi}}$ , ${\mathit P}{\mathrm -wave}$   329   $\Gamma_{9}$ ${{\mathit \Lambda}{(1520)}}{{\mathit \pi}}$ , ${\mathit F}{\mathrm -wave}$   329   $\Gamma_{10}$ ${{\mathit \Delta}{(1232)}}{{\overline{\mathit K}}}$   $(3.0\pm{1.0})\%$ 377   $\Gamma_{11}$ ${{\mathit \Delta}{(1232)}}{{\overline{\mathit K}}}$ , ${\mathit S}{\mathrm -wave}$   377   $\Gamma_{12}$ ${{\mathit \Delta}{(1232)}}{{\overline{\mathit K}}}$ , ${\mathit D}{\mathrm -wave}$   377   $\Gamma_{13}$ ${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$   seen 274   $\Gamma_{14}$ ${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$ , $\mathit S$=3/2, ${\mathit S}{\mathrm -wave}$   274   $\Gamma_{15}$ ${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$ , $\mathit S$=1/2 , ${\mathit D}{\mathrm -wave}$   $(1.0\pm{1.0})\%$ 274   $\Gamma_{16}$ ${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$ , $\mathit S$=3/2 , ${\mathit D}{\mathrm -wave}$   274
FOOTNOTES