${{\boldsymbol \Sigma}}$ BARYONS($\boldsymbol S$ = $-1$, $\boldsymbol I$ = 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

# ${{\boldsymbol \Sigma}{(1670)}}$ Bumps $I(J^P)$ = $1(?^{?})$

Formation experiments are listed separately in the preceding entry. Probably there are two states at the same mass with the same quantum numbers, one decaying to ${{\mathit \Sigma}}{{\mathit \pi}}$ and ${{\mathit \Lambda}}{{\mathit \pi}}$ , the other to ${{\mathit \Lambda}{(1405)}}{{\mathit \pi}}$ . See the note in front of the preceding entry.
 ${{\mathit \Sigma}{(1670)}}$ MASS (PRODUCTION EXPERIMENTS) $\approx{}\text{ 1670}$ MeV
 ${{\mathit \Sigma}{(1670)}}$ WIDTH (PRODUCTION EXPERIMENTS)
 ${{\mathit \Sigma}{(1670)}}$ QUANTUM NUMBERS (PRODUCTION EXPERIMENTS)