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BOTTOM BARYONS
($\boldsymbol B$ = $-1$)
${{\mathit \Lambda}_{{b}}^{0}}$ = ${{\mathit u}}{{\mathit d}}{{\mathit b}}$ , ${{\mathit \Xi}_{{b}}^{0}}$ = ${{\mathit u}}{{\mathit s}}{{\mathit b}}$ , ${{\mathit \Xi}_{{b}}^{-}}$ = ${{\mathit d}}{{\mathit s}}{{\mathit b}}$ , ${{\mathit \Omega}_{{b}}^{-}}$ = ${{\mathit s}}{{\mathit s}}{{\mathit b}}$

${{\boldsymbol \Omega}_{{b}}^{-}}$ $I(J^P)$ = $0(1/2^{+})$ I, J, P need confirmation.

In the quark model ${{\mathit \Omega}_{{b}}^{-}}$ is $\mathit ssb$ ground state. None of its quantum numbers has been measured.

${{\mathit \Omega}_{{b}}^{-}}$ MASS

$6046.1 \pm1.7$ MeV

${\mathit m}_{{{\mathit \Omega}_{{b}}^{-}}}–{\mathit m}_{{{\mathit \Lambda}_{{b}}^{0}}}$

$426.4 \pm2.2$ MeV

${\mathit m}_{{{\mathit \Omega}_{{b}}^{-}}}–{\mathit m}_{{{\mathit \Xi}_{{b}}^{-}}}$

$247.3 \pm3.2$ MeV

${{\mathit \Omega}_{{b}}}$ MEAN LIFE

$(1.64 {}^{+0.18}_{-0.17}) \times 10^{-12}$ s

$\tau ({{\mathit \Omega}_{{b}}^{-}})/\tau ({{\mathit \Xi}_{{b}}^{-}}$) mean life ratio

Decay Modes

${{\mathit J / \psi}}{{\mathit \Omega}^{-}}$ ${\times }$B( ${{\mathit b}}$ $\rightarrow$ ${{\mathit \Omega}_{{b}}}$ )

$(2.9^{+1.1}_{-0.8})\times 10^{-6}$

${{\mathit p}}{{\mathit K}^{-}}{{\mathit K}^{-}}$ ${\times }$B( ${{\overline{\mathit b}}}$ $\rightarrow$ ${{\mathit \Omega}_{{b}}}$ )

$<2.5\times 10^{-9}$

${{\mathit p}}{{\mathit \pi}^{-}}{{\mathit \pi}^{-}}$ ${\times }$B( ${{\overline{\mathit b}}}$ $\rightarrow$ ${{\mathit \Omega}_{{b}}}$ )

$<1.5\times 10^{-8}$

${{\mathit p}}{{\mathit K}^{-}}{{\mathit \pi}^{-}}$ ${\times }$B( ${{\overline{\mathit b}}}$ $\rightarrow$ ${{\mathit \Omega}_{{b}}}$ )

$<7\times 10^{-9}$