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

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

In the quark model, a ${{\mathit \Lambda}_{{b}}^{0}}$ is an isospin-0 ${{\mathit u}}{{\mathit d}}{{\mathit b}}$ state. The lowest ${{\mathit \Lambda}_{{b}}^{0}}$ ought to have $\mathit J{}^{P} = 1/2{}^{+}$. None of $\mathit I$, $\mathit J$, or $\mathit P$ have actually been measured.

▸	${{\boldsymbol \Lambda}_{{b}}^{0}}$ MASS

${\boldsymbol \tau}_{{{\boldsymbol \Lambda}_{{b}}^{0}}}/{\boldsymbol \tau}_{{{\boldsymbol B}^{0}}}$ MEAN LIFE RATIO

${\mathit \tau}_{{{\mathit \Lambda}_{{b}}^{0}}}/{\mathit \tau}_{{{\mathit B}^{0}}}$ (direct measurements)

$0.964 \pm0.007$

▸	PARTIAL BRANCHING FRACTIONS IN ${{\boldsymbol \Lambda}_{{b}}}$ $\rightarrow$ ${{\boldsymbol \Lambda}}{{\boldsymbol \mu}^{+}}{{\boldsymbol \mu}^{-}}$

▸	$\boldsymbol CP$ VIOLATION

▸	$\boldsymbol CP$ AND $\boldsymbol T$ VIOLATION PARAMETERS

▸	$\boldsymbol P$ VIOLATION PARAMETERS

▸	${{\boldsymbol \Lambda}_{{b}}^{0}}$ DECAY PARAMETERS

▸	FORWARD-BACKWARD ASYMMETRIES

${{\boldsymbol \Lambda}_{{b}}^{0}}$ ${{\overline{\boldsymbol \Lambda}}_{{b}}^{0}}$ Production Asymmetry

${{\mathit A}}_{P}({{\mathit \Lambda}_{{b}}^{0}}$)

$0.024 \pm0.016$ (S = 1.1)

Decay Modes

The branching fractions B( ${{\mathit b}}$ -baryon $\rightarrow$ ${{\mathit \Lambda}}{{\mathit \ell}^{-}}{{\overline{\mathit \nu}}_{{{{\mathit \ell}}}}}$ anything) and B( ${{\mathit \Lambda}_{{b}}^{0}}$ $\rightarrow$ ${{\mathit \Lambda}_{{c}}^{+}}{{\mathit \ell}^{-}}{{\overline{\mathit \nu}}_{{{{\mathit \ell}}}}}$ anything) are not pure measurements because the underlying measured products of these with B( ${{\mathit b}}$ $\rightarrow$ ${{\mathit b}}$ -baryon) were used to determine B( ${{\mathit b}}$ $\rightarrow$ ${{\mathit b}}$ -baryon), as described in the note ``Production and Decay of ${{\mathit b}}$-Flavored Hadrons.''
For inclusive branching fractions, $\mathit e.g.,$ ${{\mathit \Lambda}_{{b}}}$ $\rightarrow$ ${{\overline{\mathit \Lambda}}_{{c}}}$ anything, the values usually are multiplicities, not branching fractions. They can be greater than one.

${{\mathit J / \psi}{(1S)}}{{\mathit \Lambda}}{\times }$ B( ${{\mathit b}}$ $\rightarrow$ ${{\mathit \Lambda}_{{b}}^{0}}$ )

$(5.8\pm{0.8})\times 10^{-5}$

${{\mathit J / \psi}{(1S)}}{{\mathit \Lambda}}$

${{\mathit \psi}{(2S)}}{{\mathit \Lambda}}$

${{\mathit p}}{{\mathit D}^{0}}{{\mathit \pi}^{-}}$

$(6.3\pm{0.7})\times 10^{-4}$

${{\mathit \Lambda}_{{c}}{(2860)}^{+}}{{\mathit \pi}^{-}}$ , ${{\mathit \Lambda}_{{c}}^{+}}$ $\rightarrow$ ${{\mathit D}^{0}}{{\mathit p}}$

${{\mathit \Lambda}_{{c}}{(2880)}^{+}}{{\mathit \pi}^{-}}$ , ${{\mathit \Lambda}_{{c}}^{+}}$ $\rightarrow$ ${{\mathit D}^{0}}{{\mathit p}}$

${{\mathit \Lambda}_{{c}}{(2940)}^{+}}{{\mathit \pi}^{-}}$ , ${{\mathit \Lambda}_{{c}}^{+}}$ $\rightarrow$ ${{\mathit D}^{0}}{{\mathit p}}$

${{\mathit p}}{{\mathit D}^{0}}{{\mathit K}^{-}}$

$(4.6\pm{0.8})\times 10^{-5}$

${{\mathit p}}{{\mathit J / \psi}}{{\mathit \pi}^{-}}$

$(2.6^{+0.5}_{-0.4})\times 10^{-5}$

${{\mathit p}}{{\mathit \pi}^{-}}{{\mathit J / \psi}}$ , ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$

$(1.6\pm{0.8})\times 10^{-6}$

${{\mathit p}}{{\mathit J / \psi}}{{\mathit K}^{-}}$

$(3.2^{+0.6}_{-0.5})\times 10^{-4}$

${{\mathit P}_{{c}}{(4380)}^{+}}{{\mathit K}^{-}}$ , ${{\mathit P}_{{c}}}$ $\rightarrow$ ${{\mathit p}}{{\mathit J / \psi}}$

$(2.7\pm{1.4})\times 10^{-5}$

${{\mathit P}_{{c}}{(4450)}^{+}}{{\mathit K}^{-}}$ , ${{\mathit P}_{{c}}}$ $\rightarrow$ ${{\mathit p}}{{\mathit J / \psi}}$

$(1.3\pm{0.4})\times 10^{-5}$

${{\mathit \chi}_{{c1}}{(1P)}}{{\mathit p}}{{\mathit K}^{-}}$

$(7.6^{+1.5}_{-1.3})\times 10^{-5}$

${{\mathit \chi}_{{c2}}{(1P)}}{{\mathit p}}{{\mathit K}^{-}}$

$(7.9^{+1.6}_{-1.4})\times 10^{-5}$

${{\mathit p}}{{\mathit J / \psi}{(1S)}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit K}^{-}}$

$(6.6^{+1.3}_{-1.1})\times 10^{-5}$

${{\mathit p}}{{\mathit \psi}{(2S)}}{{\mathit K}^{-}}$

$(6.6^{+1.2}_{-1.0})\times 10^{-5}$

${{\mathit \chi}_{{c1}}{(3872)}}{{\mathit p}}{{\mathit K}^{-}}$

${{\mathit \chi}_{{c1}}{(3872)}}{{\mathit p}}{{\mathit K}^{-}}$ , ${{\mathit \chi}_{{c1}}{(3872)}}$ $\rightarrow$ ${{\mathit J / \psi}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$

$(1.23\pm{0.33})\times 10^{-6}$

${{\mathit \chi}_{{c1}}{(3872)}}{{\mathit \Lambda}{(1520)}}$

${{\mathit \psi}{(2S)}}{{\mathit p}}{{\mathit \pi}^{-}}$

$(7.5^{+1.6}_{-1.4})\times 10^{-6}$

${{\mathit p}}{{\overline{\mathit K}}^{0}}{{\mathit \pi}^{-}}$

$(1.3\pm{0.4})\times 10^{-5}$

${{\mathit p}}{{\mathit K}^{0}}{{\mathit K}^{-}}$

$<3.5\times 10^{-6}$

${{\mathit \Lambda}_{{c}}^{+}}{{\mathit \pi}^{-}}$

$(4.9\pm{0.4})\times 10^{-3}$

${{\mathit \Lambda}_{{c}}^{+}}{{\mathit K}^{-}}$

$(3.59\pm{0.30})\times 10^{-4}$

${{\mathit \Lambda}_{{c}}^{+}}{{\mathit a}_{{1}}{(1260)}^{-}}$

${{\mathit \Lambda}_{{c}}^{+}}{{\mathit D}^{-}}$

$(4.6\pm{0.6})\times 10^{-4}$

${{\mathit \Lambda}_{{c}}^{+}}{{\mathit D}_{{s}}^{-}}$

$(1.10\pm{0.10})\%$

${{\mathit \Lambda}_{{c}}^{+}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{-}}$

$(7.7\pm{1.1})\times 10^{-3}$

${{\mathit \Lambda}_{{c}}{(2595)}^{+}}{{\mathit \pi}^{-}}$ , ${{\mathit \Lambda}_{{c}}{(2595)}^{+}}$ $\rightarrow$ ${{\mathit \Lambda}_{{c}}^{+}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$

$(3.4\pm{1.5})\times 10^{-4}$

${{\mathit \Lambda}_{{c}}{(2625)}^{+}}{{\mathit \pi}^{-}}$ , ${{\mathit \Lambda}_{{c}}{(2625)}^{+}}$ $\rightarrow$ ${{\mathit \Lambda}_{{c}}^{+}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$

$(3.3\pm{1.3})\times 10^{-4}$

${{\mathit \Sigma}_{{c}}{(2455)}^{0}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ , ${{\mathit \Sigma}_{{c}}^{0}}$ $\rightarrow$ ${{\mathit \Lambda}_{{c}}^{+}}{{\mathit \pi}^{-}}$

$(5.7\pm{2.2})\times 10^{-4}$

${{\mathit \Sigma}_{{c}}{(2455)}^{++}}{{\mathit \pi}^{-}}{{\mathit \pi}^{-}}$ , ${{\mathit \Sigma}_{{c}}^{++}}$ $\rightarrow$ ${{\mathit \Lambda}_{{c}}^{+}}{{\mathit \pi}^{+}}$

$(3.2\pm{1.6})\times 10^{-4}$

${{\mathit \Lambda}_{{c}}^{+}}{{\mathit p}}{{\overline{\mathit p}}}{{\mathit \pi}^{-}}$

$(2.65\pm{0.29})\times 10^{-4}$

${{\mathit \Sigma}_{{c}}{(2455)}^{0}}{{\mathit p}}{{\overline{\mathit p}}}$ , ${{\mathit \Sigma}_{{c}}{(2455)}^{0}}$ $\rightarrow$ ${{\mathit \Lambda}_{{c}}^{+}}{{\mathit \pi}^{-}}$

$(2.4\pm{0.5})\times 10^{-5}$

${{\mathit \Sigma}_{{c}}{(2520)}^{0}}{{\mathit p}}{{\overline{\mathit p}}}$ , ${{\mathit \Sigma}_{{c}}{(2520)}^{0}}$ $\rightarrow$ ${{\mathit \Lambda}_{{c}}^{+}}{{\mathit \pi}^{-}}$

$(3.2\pm{0.7})\times 10^{-5}$

${{\mathit \Lambda}}{{\mathit K}^{0}}$2 ${{\mathit \pi}^{+}}$2 ${{\mathit \pi}^{-}}$

${{\mathit \Lambda}_{{c}}^{+}}{{\mathit \ell}^{-}}{{\overline{\mathit \nu}}_{{{{\mathit \ell}}}}}$ anything

$(10.9\pm{2.2})\%$

${{\mathit \Lambda}_{{c}}^{+}}{{\mathit \ell}^{-}}{{\overline{\mathit \nu}}_{{{{\mathit \ell}}}}}$

$(6.2^{+1.4}_{-1.3})\%$

${{\mathit \Lambda}_{{c}}^{+}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \ell}^{-}}{{\overline{\mathit \nu}}_{{{{\mathit \ell}}}}}$

$(5.6\pm{3.1})\%$

${{\mathit \Lambda}_{{c}}{(2595)}^{+}}{{\mathit \ell}^{-}}{{\overline{\mathit \nu}}_{{{{\mathit \ell}}}}}$

$(7.9^{+4.0}_{-3.5})\times 10^{-3}$

${{\mathit \Lambda}_{{c}}{(2625)}^{+}}{{\mathit \ell}^{-}}{{\overline{\mathit \nu}}_{{{{\mathit \ell}}}}}$

$(1.3^{+0.6}_{-0.5})\%$

${{\mathit \Sigma}_{{c}}{(2455)}^{0}}{{\mathit \pi}^{+}}{{\mathit \ell}^{-}}{{\overline{\mathit \nu}}_{{{{\mathit \ell}}}}}$

${{\mathit \Sigma}_{{c}}{(2455)}^{++}}{{\mathit \pi}^{-}}{{\mathit \ell}^{-}}{{\overline{\mathit \nu}}_{{{{\mathit \ell}}}}}$

${{\mathit p}}{{\mathit h}^{-}}$

$<2.3\times 10^{-5}$

${{\mathit p}}{{\mathit \pi}^{-}}$

$(4.5\pm{0.8})\times 10^{-6}$

${{\mathit p}}{{\mathit K}^{-}}$

$(5.4\pm{1.0})\times 10^{-6}$

${{\mathit p}}{{\mathit D}_{{s}}^{-}}$

$<4.8\times 10^{-4}$

${{\mathit p}}{{\mathit \mu}^{-}}{{\overline{\mathit \nu}}_{{\mu}}}$

$(4.1\pm{1.0})\times 10^{-4}$

${{\mathit \Lambda}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$

$(1.08\pm{0.28})\times 10^{-6}$

${{\mathit p}}{{\mathit \pi}^{-}}{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$

$(6.9\pm{2.5})\times 10^{-8}$

${{\mathit \Lambda}}{{\mathit \gamma}}$

$(7.1\pm{1.7})\times 10^{-6}$

${{\mathit \Lambda}}{{\mathit \eta}}$

$(9^{+7}_{-5})\times 10^{-6}$

${{\mathit \Lambda}}{{\mathit \eta}^{\,'}{(958)}}$

$<3.1\times 10^{-6}$

${{\mathit \Lambda}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$

$(4.7\pm{1.9})\times 10^{-6}$

${{\mathit \Lambda}}{{\mathit K}^{+}}{{\mathit \pi}^{-}}$

$(5.7\pm{1.3})\times 10^{-6}$

${{\mathit \Lambda}}{{\mathit K}^{+}}{{\mathit K}^{-}}$

$(1.62\pm{0.23})\times 10^{-5}$

${{\mathit \Lambda}}{{\mathit \phi}}$

$(9.8\pm{2.6})\times 10^{-6}$

${{\mathit p}}{{\mathit \pi}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$

$(2.11\pm{0.23})\times 10^{-5}$

${{\mathit p}}{{\mathit K}^{-}}{{\mathit K}^{+}}{{\mathit \pi}^{-}}$

$(4.1\pm{0.6})\times 10^{-6}$

${{\mathit p}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$

$(5.1\pm{0.5})\times 10^{-5}$

${{\mathit p}}{{\mathit K}^{-}}{{\mathit K}^{+}}{{\mathit K}^{-}}$

$(1.27\pm{0.14})\times 10^{-5}$

constrained fit information