pdgLive Home   >   ${{\mathit \Omega}}$ BARYONS   >   ${{\mathit \Omega}{(2012)}^{-}}$

${{\mathit \Omega}}$ BARYONS ($\mathit S$ = $-3$, $\mathit I$ = 0) ${{\mathit \Omega}^{-}}$ = ${\mathit {\mathit s}}$ ${\mathit {\mathit s}}$ ${\mathit {\mathit s}}$

INSPIRE

${{\mathit \Omega}{(2012)}^{-}}$ $I(J^P)$ = $0(?^{-})$

Seen in ${{\mathit \Xi}^{0}}{{\mathit K}^{-}}$ and ${{\mathit \Xi}^{-}}{{\mathit K}_S^0}$ decays with a combined significance of 8.3 standard deviations.

${{\mathit \Omega}{(2012)}^{-}}$ MASS   $2012.4 \pm0.9$ MeV

${{\mathit \Omega}{(2012)}^{-}}$ WIDTH   $6.4 {}^{+3.0}_{-2.6}$ MeV

${{\mathit \Omega}{(2012)}^{-}}$ Decay Modes
Branching fractions are given relative to the one $\mathbf {DEFINED~AS~1}$.
Mode   Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/ Conf. Level P(MeV/c)   $\Gamma_{1}$ ${{\mathit \Xi}}{{\mathit K}}$   403   $\Gamma_{2}$ ( ${{\mathit \Xi}}{{\mathit \pi}}$) ${{\mathit K}}$   245   $\Gamma_{3}$ ${{\mathit \Xi}^{0}}{{\mathit K}^{-}}$   DEFINED AS 1 403   $\Gamma_{4}$ ${{\mathit \Xi}^{-}}{{\overline{\mathit K}}^{0}}$   $0.83\pm{0.21}$ 392   $\Gamma_{5}$ ${{\mathit \Xi}^{0}}{{\mathit \pi}^{0}}{{\mathit K}^{-}}$   $<0.30$ CL=90% 245   $\Gamma_{6}$ ${{\mathit \Xi}^{0}}{{\mathit \pi}^{-}}{{\overline{\mathit K}}^{0}}$   $<0.21$ CL=90% 230   $\Gamma_{7}$ ${{\mathit \Xi}^{-}}{{\mathit \pi}^{0}}{{\overline{\mathit K}}^{0}}$   $<0.7$ CL=90% 226   $\Gamma_{8}$ ${{\mathit \Xi}^{-}}{{\mathit \pi}^{+}}{{\mathit K}^{-}}$   $<0.08$ CL=90% 224
FOOTNOTES