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\title{\boldmath{ $\Xi_b^0$}\ \ \ \ \ \ \ $**$}
\maketitle
The evidence for the existance of $\Xi_b^0$ is not strong, although the evidence for the $\Xi_b^-$ is stronger. The mass is obtained using the mass difference from the charm system and the mass of the $\Xi_b^-$. The lifetime is the experimentally measured value from \cite{Yao:2006px}.

The mass is taken from \cite{cdf:2007un} . The lifetime is the experimentally measured value from \cite{Yao:2006px}. 

  No branching ratios have been measured. We have therefore chosen to add a number of two body modes with branching ratios calculated from various theoretical papers and model the remaining modes using partonic decays. The ratios of the partonic decays were calculated using the colour factor for the relative rates of the leptonic and direct $b\to c$ decays, colour exchanged decays were added with one third of the rate for the direct decays. The rates of the different quarks produced in the weak decays were calculated using the CKM matrix elements.

The $\Xi_b^0$ has mass $5789.8$~MeV and is unstable. The $\Xi_b^0$ has spin $1/2$, charge $0$ and is colour neutral.
 The $\Xi_b^0$ is a baryon and is from the $(56,0^+_0)$ $40$plet.The properties of the particle and its antiparticle are taken to be charge-conjugate to each other.
 The decay length is $0.000417$~m. The PDG code is 5232.
\setlongtables
\begin{longtable}[t]{|c|c|c|p{1in}|p{2.5in}|c|}
\hline
Branching & Rating & On/ & Outgoing  & Description & Decayer  \\ 
Ratio     &                                 & Off & Particles &             &         \\ 
\hline
\endhead
\caption{The decay modes of the $\Xi_b^0$ (continues).}
\endfoot
\caption{The decay modes of the $\Xi_b^0$.}
\endlastfoot
\label{tab:5232decaymodes}
0.221900 & $**$ & on & $ s, \bar{c}, c, (su)_0 $  & Partonic decay of $\Xi_b^0$.   & Herwig::WeakPartonic::WeakPartonic100 \\ 
\hline
0.217850 & $**$ & on & $ d, \bar{u}, c, (su)_0 $  & Partonic decay of $\Xi_b^0$.   & Herwig::WeakPartonic::WeakPartonic100 \\ 
\hline
0.091110 & $**$ & on & $ c, \bar{u}, d, (su)_0 $  & Partonic decay of $\Xi_b^0$.   & Herwig::WeakPartonic::WeakPartonic100 \\ 
\hline
0.089460 & $**$ & on & $ c, \bar{c}, s, (su)_0 $  & Partonic decay of $\Xi_b^0$.   & Herwig::WeakPartonic::WeakPartonic100 \\ 
\hline
0.073200 & $**$ & on & $ e^-, \bar{\nu}_e, \Xi_c^+ $  & Semi-leptonic decay of $\Xi_b^0$ with branching ratio calculated using the partial width from \cite{Ivanov:1996fj}  and our lifetime estimate.   & Herwig::SemiLeptonicBaryon::BaryonHeavy1 \\ 
\hline
0.073200 & $**$ & on & $ \mu^-, \bar{\nu}_\mu, \Xi_c^+ $  & Semi-leptonic decay of $\Xi_b^0$ with branching ratio calculated using the partial width from \cite{Ivanov:1996fj}  and our lifetime estimate.   & Herwig::SemiLeptonicBaryon::BaryonHeavy1 \\ 
\hline
0.032000 & $**$ & on & $ \Xi_c^+, D_s^{*-} $  & Decay of $\Xi_b^0$ with partial width from \cite{Cheng:1996cs}  using $a_1=1.2$ to get the same $\Xi_c^-\pi^+$ rate that we have.   & Herwig::BaryonFactorized::BottomBaryonVector \\ 
\hline
0.028000 & $**$ & on & $ \Xi_c^+, a_1^-(1260) $  & Decay of $\Xi_b^0$ with partial width calculated using the form factors from \cite{Cheng:1996cs}  with $a_1=1.2$ to get the same $\Xi_c^-\pi^+$ rate that we have.   & Herwig::BaryonFactorized::BottomBaryonVector \\ 
\hline
0.023000 & $**$ & on & $ e^-, \bar{\nu}_e, c, (su)_0 $  & Partonic decay of $\Xi_b^0$.   & Herwig::WeakPartonic::WeakPartonic100 \\ 
\hline
0.023000 & $**$ & on & $ \mu^-, \bar{\nu}_\mu, c, (su)_0 $  & Partonic decay of $\Xi_b^0$.   & Herwig::WeakPartonic::WeakPartonic100 \\ 
\hline
0.021100 & $**$ & on & $ \tau^-, \bar{\nu}_\tau, \Xi_c^+ $  & Semi-leptonic decay of $\Xi_b^0$ with branching ratio calculated using the partial width from \cite{Ivanov:1996fj}  and our lifetime estimate.   & Herwig::SemiLeptonicBaryon::BaryonHeavy1 \\ 
\hline
0.020000 & $**$ & on & $ \Xi_c^+, D_s^- $  & Decay of $\Xi_b^0$ with partial width from \cite{Cheng:1996cs}  using $a_1=1.2$ to get the same $\Xi_c^-\pi^+$ rate that we have.   & Herwig::BaryonFactorized::BottomBaryonScalar \\ 
\hline
0.019000 & $**$ & on & $ \Xi_c^+, \rho^- $  & Decay of $\Xi_b^0$ with partial width from \cite{Cheng:1996cs}  using $a_1=1.2$ to get the same $\Xi_c^-\pi^+$ rate that we have.   & Herwig::BaryonFactorized::BottomBaryonVector \\ 
\hline
0.012870 & $**$ & on & $ s, \bar{u}, c, (su)_0 $  & Partonic decay of $\Xi_b^0$.   & Herwig::WeakPartonic::WeakPartonic100 \\ 
\hline
0.012630 & $**$ & on & $ d, \bar{c}, c, (su)_0 $  & Partonic decay of $\Xi_b^0$.   & Herwig::WeakPartonic::WeakPartonic100 \\ 
\hline
0.011000 & $**$ & on & $ \tau^-, \bar{\nu}_\tau, c, (su)_0 $  & Partonic decay of $\Xi_b^0$.   & Herwig::WeakPartonic::WeakPartonic100 \\ 
\hline
0.006700 & $**$ & on & $ \Xi_c^+, \pi^- $  & Decay of $\Xi_b^0$ with branching ratio calculated using the partial width from \cite{Ivanov:1997ra}  and our lifetime   & Herwig::BaryonFactorized::BottomBaryonScalar \\ 
\hline
0.004800 & $**$ & on & $ c, \bar{c}, d, (su)_0 $  & Partonic decay of $\Xi_b^0$.   & Herwig::WeakPartonic::WeakPartonic100 \\ 
\hline
0.004800 & $**$ & on & $ c, \bar{u}, s, (su)_0 $  & Partonic decay of $\Xi_b^0$.   & Herwig::WeakPartonic::WeakPartonic100 \\ 
\hline
0.002200 & $**$ & on & $ d, \bar{u}, u, (su)_0 $  & Partonic decay of $\Xi_b^0$.   & Herwig::WeakPartonic::WeakPartonic100 \\ 
\hline
0.002200 & $**$ & on & $ s, \bar{c}, u, (su)_0 $  & Partonic decay of $\Xi_b^0$.   & Herwig::WeakPartonic::WeakPartonic100 \\ 
\hline
0.001100 & $**$ & on & $ \Xi_c^+, K^{*-} $  & Decay of $\Xi_b^0$ with partial width calculated using the form factors from \cite{Cheng:1996cs}  with $a_1=1.2$ to get the same $\Xi_c^-\pi^+$ rate that we have.   & Herwig::BaryonFactorized::BottomBaryonVector \\ 
\hline
0.001100 & $**$ & on & $ \Xi_c^+, D^{*-}(2010) $  & Decay of $\Xi_b^0$ with partial width calculated using the form factors from \cite{Cheng:1996cs}  with $a_1=1.2$ to get the same $\Xi_c^-\pi^+$ rate that we have.   & Herwig::BaryonFactorized::BottomBaryonVector \\ 
\hline
0.001000 & $**$ & on & $ \Xi^0, J/\psi(1S) $  & Decay of $\Xi_b^0$ with partial width from \cite{Cheng:1996cs}  using $a_2=0.474$ to get the same $\Lambda_b^0\to J/\psi\Lambda^0$ rate given in \cite{Yao:2006px}.   & Herwig::BaryonFactorized::BottomBaryonVector \\ 
\hline
0.000840 & $**$ & on & $ \Xi^0, \psi(2S) $  & Decay of $\Xi_b^0$ with partial width from \cite{Cheng:1996cs}  using $a_2=0.474$ to get the same $\Lambda_b^0\to J/\psi\Lambda^0$ rate given in \cite{Yao:2006px}.   & Herwig::BaryonFactorized::BottomBaryonVector \\ 
\hline
0.000800 & $**$ & on & $ e^-, \bar{\nu}_e, u, (su)_0 $  & Partonic decay of $\Xi_b^0$.   & Herwig::WeakPartonic::WeakPartonic100 \\ 
\hline
0.000800 & $**$ & on & $ \mu^-, \bar{\nu}_\mu, u, (su)_0 $  & Partonic decay of $\Xi_b^0$.   & Herwig::WeakPartonic::WeakPartonic100 \\ 
\hline
0.000770 & $**$ & on & $ \Xi_c^+, D^- $  & Decay of $\Xi_b^0$ with partial width calculated using the form factors from \cite{Cheng:1996cs}  with $a_1=1.2$ to get the same $\Xi_c^-\pi^+$ rate that we have.   & Herwig::BaryonFactorized::BottomBaryonScalar \\ 
\hline
0.000530 & $**$ & on & $ \Xi_c^+, K^- $  & Decay of $\Xi_b^0$ with partial width calculated using the form factors from \cite{Cheng:1996cs}  with $a_1=1.2$ to get the same $\Xi_c^-\pi^+$ rate that we have.   & Herwig::BaryonFactorized::BottomBaryonScalar \\ 
\hline
0.000400 & $**$ & on & $ \Sigma_c^{+}, K^- $  & Decay of $\Xi_b^0$ with branching ratio calculated using the partial width from \cite{Ivanov:1997ra}  and our lifetime   & Herwig::Hw64::DecayME0 \\ 
\hline
0.000320 & $**$ & on & $ \Omega^0_c, K^0 $  & Decay of $\Xi_b^0$ with branching ratio calculated using the partial width from \cite{Ivanov:1997ra}  and our lifetime   & Herwig::Hw64::DecayME0 \\ 
\hline
0.000300 & $**$ & on & $ \tau^-, \bar{\nu}_\tau, u, (su)_0 $  & Partonic decay of $\Xi_b^0$.   & Herwig::WeakPartonic::WeakPartonic100 \\ 
\hline
0.000300 & $**$ & on & $ {\Xi'}_c^0, \eta' $  & Decay of $\Xi_b^0$ with branching ratio calculated using the partial width from \cite{Ivanov:1997ra}  and our lifetime   & Herwig::Hw64::DecayME0 \\ 
\hline
0.000300 & $**$ & on & $ \Sigma_c^0, \bar{K}^0 $  & Decay of $\Xi_b^0$ with branching ratio calculated using the partial width from \cite{Ivanov:1997ra}  and our lifetime   & Herwig::Hw64::DecayME0 \\ 
\hline
0.000250 & $**$ & on & $ {\Xi'}_c^+, \pi^- $  & Decay of $\Xi_b^0$ with branching ratio calculated using the partial width from \cite{Ivanov:1997ra}  and our lifetime   & Herwig::Hw64::DecayME0 \\ 
\hline
0.000210 & $**$ & on & $ {\Xi'}_c^0, \eta $  & Decay of $\Xi_b^0$ with branching ratio calculated using the partial width from \cite{Ivanov:1997ra}  and our lifetime   & Herwig::Hw64::DecayME0 \\ 
\hline
0.000200 & $**$ & on & $ {\Xi'}_c^0, \pi^0 $  & Decay of $\Xi_b^0$ with branching ratio calculated using the partial width from \cite{Ivanov:1997ra}  and our lifetime   & Herwig::Hw64::DecayME0 \\ 
\hline
0.000160 & $**$ & on & $ \Xi_c^0, \eta $  & Decay of $\Xi_b^0$ with branching ratio calculated using the partial width from \cite{Ivanov:1997ra}  and our lifetime   & Herwig::Hw64::DecayME0 \\ 
\hline
0.000140 & $**$ & on & $ \Lambda_c^+, K^- $  & Decay of $\Xi_b^0$ with branching ratio calculated using the partial width from \cite{Ivanov:1997ra}  and our lifetime   & Herwig::Hw64::DecayME0 \\ 
\hline
0.000100 & $**$ & on & $ d, \bar{c}, u, (su)_0 $  & Partonic decay of $\Xi_b^0$.   & Herwig::WeakPartonic::WeakPartonic100 \\ 
\hline
0.000100 & $**$ & on & $ s, \bar{u}, u, (su)_0 $  & Partonic decay of $\Xi_b^0$.   & Herwig::WeakPartonic::WeakPartonic100 \\ 
\hline
0.000090 & $**$ & on & $ \Sigma^0, D^{*0}(2007) $  & Decay of $\Xi_b^0$ with partial width from \cite{Cheng:1996cs}  using $a_2=0.474$ to get the same $\Lambda_b^0\to J/\psi\Lambda^0$ rate given in \cite{Yao:2006px}.   & Herwig::BaryonFactorized::BottomBaryonVector \\ 
\hline
0.000060 & $**$ & on & $ \Sigma^0, D^0 $  & Decay of $\Xi_b^0$ with partial width from \cite{Cheng:1996cs}  using $a_2=0.474$ to get the same $\Lambda_b^0\to J/\psi\Lambda^0$ rate given in \cite{Yao:2006px}.   & Herwig::BaryonFactorized::BottomBaryonScalar \\ 
\hline
0.000040 & $**$ & on & $ \Xi_c^0, \eta' $  & Decay of $\Xi_b^0$ with branching ratio calculated using the partial width from \cite{Ivanov:1997ra}  and our lifetime   & Herwig::Hw64::DecayME0 \\ 
\hline
0.000030 & $**$ & on & $ \Xi_c^0, \pi^0 $  & Decay of $\Xi_b^0$ with branching ratio calculated using the partial width from \cite{Ivanov:1997ra}  and our lifetime   & Herwig::Hw64::DecayME0 \\ 
\hline
0.000020 & $**$ & on & $ \Lambda^0, D^{*0}(2007) $  & Decay of $\Xi_b^0$ with partial width from \cite{Cheng:1996cs}  using $a_2=0.474$ to get the same $\Lambda_b^0\to J/\psi\Lambda^0$ rate given in \cite{Yao:2006px}.   & Herwig::BaryonFactorized::BottomBaryonVector \\ 
\hline
0.000020 & $**$ & on & $ \Lambda^0, D^0 $  & Decay of $\Xi_b^0$ with partial width from \cite{Cheng:1996cs}  using $a_2=0.474$ to get the same $\Lambda_b^0\to J/\psi\Lambda^0$ rate given in \cite{Yao:2006px}.   & Herwig::BaryonFactorized::BottomBaryonScalar \\ 
\hline
\end{longtable}The $\Xi_b^0$ decay modes are given in Table~\ref{tab:5232decaymodes} and the total branching ratio is $1$.


 There is no mass generator for the $\Xi_b^0$.
 There is no width generator for the $\Xi_b^0$.

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 The particle was checked by Peter Richardson at 9:40:47 on the 4th of February 2009. The most recently changed decay mode was modified at 9:6:19 on the 5th of September 2005. The particle data was last modified at 11:7:31 on the 6th of July 2008.

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