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

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

In the quark model, ${{\mathit \Xi}_{{b}}^{0}}$ and ${{\mathit \Xi}_{{b}}^{-}}$ are an isodoublet ($\mathit usb$, $\mathit dsb$) state; the lowest ${{\mathit \Xi}_{{b}}^{0}}$ and ${{\mathit \Xi}_{{b}}^{-}}$ ought to have $\mathit J{}^{P} = 1/2{}^{+}$. None of $\mathit I$, $\mathit J$, or ${}^{P}$ have actually been measured.
${{\boldsymbol \Xi}_{{b}}}$ MASSES
 ${{\mathit \Xi}_{{b}}^{-}}$ MASS $5794.5 \pm1.4$ MeV (S = 4.0)
 ${{\mathit \Xi}_{{b}}^{0}}$ MASS $5791.9 \pm0.5$ MeV
 ${\mathit m}_{{{\mathit \Xi}_{{b}}^{-}}}–{\mathit m}_{{{\mathit \Lambda}_{{b}}^{0}}}$ $177.5 \pm0.5$ MeV (S = 1.6)
 ${\mathit m}_{{{\mathit \Xi}_{{b}}^{0}}}–{\mathit m}_{{{\mathit \Lambda}_{{b}}^{0}}}$ $172.5 \pm0.4$ MeV
 ${\mathit m}_{{{\mathit \Xi}_{{b}}^{-}}}–{\mathit m}_{{{\mathit \Xi}_{{b}}^{0}}}$ $5.9 \pm0.6$ MeV
${{\boldsymbol \Xi}_{{b}}}$ MEAN LIFE
 ${{\mathit \Xi}_{{b}}^{-}}$ MEAN LIFE $(1.571 \pm0.040) \times 10^{-12}$ s
 ${{\mathit \Xi}_{{b}}^{0}}$ MEAN LIFE $(1.479 \pm0.031) \times 10^{-12}$ s
 ${{\mathit \Xi}_{{b}}}$ MEAN LIFE
 ${{\mathit \tau}_{{{mix}}}}$ (1/2${{\mathit \pi}}$) times the oscillation period
MEAN LIFE RATIOS
 ${\mathit \tau}_{{{\mathit \Xi}_{{b}}^{-}}}$ $/$ ${\mathit \tau}_{{{\mathit \Lambda}_{{b}}^{0}}}$ mean life ratio $1.089 \pm0.028$
 ${\mathit \tau}_{{{\mathit \Xi}_{{b}}^{-}}}$ $/$ ${\mathit \tau}_{{{\mathit \Xi}_{{b}}^{0}}}$ mean life ratio $1.08 \pm0.04$