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\title{\boldmath{ $\Omega^-$}\ \ \ \ \ \ \ $*****$}
\maketitle
 The $\Omega^-$ is the lightest triply strange baryon. The mass and lifetime are accurately measured and the branching ratios for the dominant and several sub-dominant modes have been measured.
The $\Omega^-$ has mass $1672.45$~MeV and is unstable. The $\Omega^-$ has spin $3/2$, charge $-1$ and is colour neutral.
 The $\Omega^-$ is a baryon and is from the $(56,0^+_0)$ $35$plet.The properties of the particle and its antiparticle are taken to be charge-conjugate to each other.
 The decay length is $0.02461$~m. The PDG code is 3334.
\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 $\Omega^-$ (continues).}
\endfoot
\caption{The decay modes of the $\Omega^-$.}
\endlastfoot
\label{tab:3334decaymodes}
0.673797 & $*****$ & on & $ \Lambda^0, K^- $  & The dominant decay of $\Omega^-$ with branching ratio from \cite{Yao:2006px}.   & Herwig::NonLeptonicOmega::OmegaNL \\ 
\hline
0.234536 & $*****$ & on & $ \Xi^0, \pi^- $  & The decay of $\Omega^-$ to $\Xi$ and a pion with branching ratio from \cite{Yao:2006px}.   & Herwig::NonLeptonicOmega::OmegaNL \\ 
\hline
0.085466 & $*****$ & on & $ \Xi^-, \pi^0 $  & The decay of $\Omega^-$ to $\Xi$ and a pion with branching ratio from \cite{Yao:2006px}.   & Herwig::NonLeptonicOmega::OmegaNL \\ 
\hline
0.005565 & $***$ & on & $ \Xi^0, e^-, \bar{\nu}_e $  & The semi-leptonic decay of $\Omega^-$ with branching ratio from \cite{Yao:2006px}.   & Herwig::Hw64::DecayME0 \\ 
\hline
0.000636 & $***$ & on & $ \Xi^{*0}, \pi^- $  & The decay of $\Omega^-$ to $\Xi^*$ and a pion with branching ratio from \cite{Yao:2006px}. This mode saturates the $\Xi^-\pi^+\pi^-$ mode.   & Herwig::OmegaXiStarPion::OmegaXiStar \\ 
\hline
\end{longtable}The $\Omega^-$ decay modes are given in Table~\ref{tab:3334decaymodes} and the total branching ratio is $1$.


 There is no mass generator for the $\Omega^-$.
 There is no width generator for the $\Omega^-$.

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 The particle was checked by Peter Richardson at 9:23:35 on the 4th of February 2009. The most recently changed decay mode was modified at 22:48:32 on the 21st of July 2005. The particle data was last modified at 16:24:39 on the 10th of October 2006.

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