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${{\mathit \Lambda}}$ BARYONS ($\mathit S$ = $-1$, $\mathit I$ = 0) ${{\mathit \Lambda}^{0}}$ = ${\mathit {\mathit u}}$ ${\mathit {\mathit d}}$ ${\mathit {\mathit s}}$

INSPIRE   JSON PDGID: B040

${{\mathit \Lambda}{(1670)}}$ $I(J^P)$ = $0(1/2^{-})$

The measurements of the mass, width, and elasticity published before 1974 are now obsolete and have been omitted. They were last listed in our 1982 edition Physics Letters 111B 1 (1982).

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▸  exp ${{\mathit \Lambda}{(1670)}}$ POLE POSITIONS

REAL PART 1670 TO 1678 $(\approx 1674 )$ MeV

$-2{\times }$IMAGINARY PART 28 TO 36 $(\approx 32 )$ MeV

▸  exp ${{\mathit \Lambda}{(1670)}}$ POLE RESIDUES

Normalized residue in ${{\overline{\mathit K}}}$ ${{\mathit N}}$ $\rightarrow$ ${{\mathit \Lambda}{(1670)}}$ $\rightarrow$ ${{\overline{\mathit K}}}{{\mathit N}}$ $0.30$ $\pm0.06$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Lambda}{(1670)}}$ $\rightarrow$ ${{\mathit \Sigma}}{{\mathit \pi}}$ $0.19$ $\pm0.06$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Lambda}{(1670)}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit \eta}}$ $0.26$ $\pm0.09$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Lambda}{(1670)}}$ $\rightarrow$ ${{\mathit \Xi}}{{\mathit K}}$ $0.02$ $\pm0.02$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Lambda}{(1670)}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit \omega}}$, $\mathit S$=1/2, ${\mathit S}{\mathrm -wave}$ $0.09$ $\pm0.04$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Lambda}{(1670)}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit \omega}}$, $\mathit S$=3/2, ${\mathit D}{\mathrm -wave}$ $0.05$ $\pm0.04$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Lambda}{(1670)}}$ $\rightarrow$ ${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$, $\mathit S$=1/2, ${\mathit S}{\mathrm -wave}$ $0.31$ $\pm0.14$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Lambda}{(1670)}}$ $\rightarrow$ ${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$, $\mathit S$=3/2, ${\mathit D}{\mathrm -wave}$ $0.06$ $\pm0.03$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Lambda}{(1670)}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit \sigma}}$ $0.25$ $\pm0.08$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Lambda}{(1670)}}$ $\rightarrow$ ${{\mathit \Sigma}{(1385)}}{{\mathit \pi}}$ $0.13$ $\pm0.06$

${{\mathit \Lambda}{(1670)}}$ MASS 1670 TO 1678 $(\approx 1674 )$ MeV

${{\mathit \Lambda}{(1670)}}$ WIDTH 25 TO 35 $(\approx 30 )$ MeV

${{\mathit \Lambda}{(1670)}}$ DECAY MODES

Mode   Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/ Conf. Level P(MeV/c)   $\Gamma_{1}$ ${{\mathit N}}{{\overline{\mathit K}}}$ $(20-30) \%$ 418   $\Gamma_{2}$ ${{\mathit \Sigma}}{{\mathit \pi}}$ $(25-55) \%$ 398   $\Gamma_{3}$ ${{\mathit \Lambda}}{{\mathit \eta}}$ $(10-25) \%$ 88   $\Gamma_{4}$ ${{\mathit \Sigma}{(1385)}}{{\mathit \pi}}$ , ${\mathit D}{\mathrm -wave}$ ($6.0$ $\pm2.0$ ) $\%$ 235   $\Gamma_{5}$ ${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$ , $\mathit S$=1/2, ${\mathit S}{\mathrm -wave}$ -1   $\Gamma_{6}$ ${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$ , $\mathit S$=3/2, ${\mathit D}{\mathrm -wave}$ ($5$ $\pm4$ ) $\%$ -1   $\Gamma_{7}$ ${{\mathit \Lambda}}{{\mathit \sigma}}$ ($20$ $\pm8$ ) $\%$