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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

${{\mathit \Lambda}{(2110)}}$ $I(J^P)$ = $0(5/2^{+})$

For results published before 1974 (they are now obsolete), see our 1982 edition Physics Letters 111B 1 (1982). All the references have been retained. This resonance is in the Baryon Summary Table, but the evidence for it could be better.

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

REAL PART   $2048 \pm10$ MeV

$-2{\times }$IMAGINARY PART   $255 \pm20$ MeV

${{\mathit \Lambda}{(2110)}}$ POLE RESIDUE

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Lambda}{(2110)}}$ $\rightarrow$ ${{\mathit N}}{{\overline{\mathit K}}}$   $0.020 \pm0.005$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Lambda}{(2110)}}$ $\rightarrow$ ${{\mathit \Sigma}}{{\mathit \pi}}$   $0.13 \pm0.03$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Lambda}{(2110)}}$ $\rightarrow$ ${{\mathit \Xi}}{{\mathit K}}$   $0.005 \pm0.005$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Lambda}{(2110)}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit \omega}}$ , $\mathit S$=1/2, ${\mathit P}{\mathrm -wave}$   $0.01 \pm0.01$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Lambda}{(2110)}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit \omega}}$ , $\mathit S$=3/2, ${\mathit P}{\mathrm -wave}$   $0.03 \pm0.01$

Normalized residue in ${{\mathit N}}$ ${{\overline{\mathit K}}}$ $\rightarrow$ ${{\mathit \Lambda}{(2110)}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit \omega}}$ , $\mathit S$=3/2, ${\mathit F}{\mathrm -wave}$   $0.01 \pm0.01$

${{\mathit \Lambda}{(2110)}}$ MASS   $2050\text{ to }2130\text{ }(\approx2090) $ MeV

${{\mathit \Lambda}{(2110)}}$ WIDTH   $200\text{ to }300\text{ }(\approx250) $ MeV

${{\mathit \Lambda}{(2110)}}$ Decay Modes
Mode   Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/ Conf. Level P(MeV/c)   $\Gamma_{1}$ ${{\mathit N}}{{\overline{\mathit K}}}$   5$-25\%$ 744   $\Gamma_{2}$ ${{\mathit \Sigma}}{{\mathit \pi}}$   10$-40\%$ 698   $\Gamma_{3}$ ${{\mathit \Lambda}}{{\mathit \omega}}$   seen 432   $\Gamma_{4}$ ${{\mathit \Lambda}}{{\mathit \omega}}$ , $\mathit S$=1/2 , ${\mathit P}{\mathrm -wave}$   432   $\Gamma_{5}$ ${{\mathit \Lambda}}{{\mathit \omega}}$ , $\mathit S$=3/2 , ${\mathit P}{\mathrm -wave}$   $(5.0\pm{2.0})\%$ 432   $\Gamma_{6}$ ${{\mathit \Lambda}}{{\mathit \omega}}$ , $\mathit S$=3/2 , ${\mathit F}{\mathrm -wave}$   432   $\Gamma_{7}$ ${{\mathit \Xi}}{{\mathit K}}$   482   $\Gamma_{8}$ ${{\mathit \Sigma}{(1385)}}{{\mathit \pi}}$   seen 576   $\Gamma_{9}$ ${{\mathit \Sigma}{(1385)}}{{\mathit \pi}}$ , ${\mathit P}{\mathrm -wave}$   576   $\Gamma_{10}$ ${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$   10$-60\%$ 505   $\Gamma_{11}$ ${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$ , $\mathit S$=1/2   505   $\Gamma_{12}$ ${{\mathit N}}{{\overline{\mathit K}}^{*}{(892)}}$ , $\mathit S$=3/2, ${\mathit P}{\mathrm -wave}$   505
FOOTNOTES