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

INSPIRE   JSON PDGID: S070

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

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.

${{\mathit \Xi}_{{{b}}}^{0}}$ MASS

${{\mathit \Xi}_{{{b}}}^{0}}$ MASS   $5791.9 \pm0.5$ MeV

${\mathit m}_{{{\mathit \Xi}_{{{b}}}^{0}}}–{\mathit m}_{{{\mathit \Lambda}_{{{b}}}^{0}}}$   $172.5 \pm0.4$ MeV

${{\mathit \Xi}_{{{b}}}^{0}}$ MEAN LIFE

${{\mathit \Xi}_{{{b}}}^{0}}$ MEAN LIFE   $(1.480 \pm0.030) \times 10^{-12}$ s

${{\mathit \tau}_{{{{mix}}}}}$ (1/2${{\mathit \pi}}$) times the oscillation period

$\mathit P$ AND $\mathit CP$ VIOLATION ASYMMETRIES

a$_{P}$( ${{\mathit \Xi}_{{{b}}}^{0}}$ $\rightarrow$ ${{\mathit p}}{{\mathit K}^{-}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}$)   $-0.03 \pm0.05$

a$_{CP}$( ${{\mathit \Xi}_{{{b}}}^{0}}$ $\rightarrow$ ${{\mathit p}}{{\mathit K}^{-}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}$)   $-0.04 \pm0.05$

$\Delta \mathit A_{CP}$( ${{\mathit \Xi}_{{{b}}}^{0}}$ $\rightarrow$ ${{\mathit p}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$)   $-0.17 \pm0.11$

$\Delta \mathit A_{CP}$( ${{\mathit \Xi}_{{{b}}}^{0}}$ $\rightarrow$ ${{\mathit p}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit K}^{-}}$)   $-0.07 \pm0.08$

${{\mathit \Xi}_{{{b}}}^{0}}$ DECAY MODES
Mode   Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/ Conf. Level P(MeV/c)   $\Gamma_{1}$ ${{\mathit p}}{{\mathit D}^{0}}{{\mathit K}^{-}}$ ${\times }$ B( ${{\mathit b}}$ $\rightarrow$ ${{\mathit \Xi}_{{{b}}}^{0}}$)   $(1.7\pm{0.5})\times 10^{-6}$ 2374   $\Gamma_{2}$ ${{\mathit p}}{{\overline{\mathit K}}^{0}}{{\mathit \pi}^{-}}$ ${\times }$ B( ${{\mathit b}}$ $\rightarrow$ ${{\mathit \Xi}_{{{b}}}^{0}})/B({{\overline{\mathit b}}}$ $\rightarrow$ ${{\mathit B}^{0}}$ )   $<1.6\times 10^{-6}$ CL=90% 2783   $\Gamma_{3}$ ${{\mathit p}}{{\mathit K}^{0}}{{\mathit K}^{-}}$ ${\times }$ B( ${{\mathit b}}$ $\rightarrow$ ${{\mathit \Xi}_{{{b}}}^{0}})/B({{\overline{\mathit b}}}$ $\rightarrow$ ${{\mathit B}^{0}}$ )   $<1.1\times 10^{-6}$ CL=90% 2730   $\Gamma_{4}$ ${{\mathit \Lambda}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ ${\times }$ B( ${{\mathit b}}$ $\rightarrow$ ${{\mathit \Xi}_{{{b}}}^{0}})/B({{\mathit b}}$ $\rightarrow$ ${{\mathit \Lambda}_{{{b}}}^{0}}$ )   $<1.7\times 10^{-6}$ CL=90% 2781   $\Gamma_{5}$ ${{\mathit \Lambda}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}$ ${\times }$ B( ${{\mathit b}}$ $\rightarrow$ ${{\mathit \Xi}_{{{b}}}^{0}})/B({{\mathit b}}$ $\rightarrow$ ${{\mathit \Lambda}_{{{b}}}^{0}}$ )   $<8\times 10^{-7}$ CL=90% 2751   $\Gamma_{6}$ ${{\mathit \Lambda}}{{\mathit K}^{+}}{{\mathit K}^{-}}$ ${\times }$ B( ${{\mathit b}}$ $\rightarrow$ ${{\mathit \Xi}_{{{b}}}^{0}})/B({{\mathit b}}$ $\rightarrow$ ${{\mathit \Lambda}_{{{b}}}^{0}}$ )   $<3\times 10^{-7}$ CL=90% 2698   $\Gamma_{7}$ ${{\mathit J / \psi}}{{\mathit \Lambda}}$   seen 1868   $\Gamma_{8}$ ${{\mathit J / \psi}}{{\mathit \Xi}^{0}}$   seen 1785   $\Gamma_{9}$ ${{\mathit \Lambda}_{{{c}}}^{+}}{{\mathit K}^{-}}{\times }$ B( ${{\mathit b}}$ $\rightarrow$ ${{\mathit \Xi}_{{{b}}}^{0}}$)   $(6\pm{4})\times 10^{-7}$ 2416   $\Gamma_{10}$ ${{\mathit p}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ ${\times }$ B( ${{\mathit b}}$ $\rightarrow$ ${{\mathit \Xi}_{{{b}}}^{0}})/B({{\mathit b}}$ $\rightarrow$ ${{\mathit \Lambda}_{{{b}}}^{0}}$ )   $(1.9\pm{0.4})\times 10^{-6}$ 2766   $\Gamma_{11}$ ${{\mathit p}}{{\mathit K}^{-}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}$ ${\times }$ B( ${{\mathit b}}$ $\rightarrow$ ${{\mathit \Xi}_{{{b}}}^{0}})/B({{\mathit b}}$ $\rightarrow$ ${{\mathit \Lambda}_{{{b}}}^{0}}$ )   $(1.70\pm{0.30})\times 10^{-6}$ 2704   $\Gamma_{12}$ ${{\mathit p}}{{\mathit K}^{-}}{{\mathit K}^{+}}{{\mathit K}^{-}}$ ${\times }$ B( ${{\mathit b}}$ $\rightarrow$ ${{\mathit \Xi}_{{{b}}}^{0}})/B({{\mathit b}}$ $\rightarrow$ ${{\mathit \Lambda}_{{{b}}}^{0}}$ )   $(1.7\pm{0.9})\times 10^{-7}$ 2620
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