% particle data information automatically produced from the herwig database
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\title{\boldmath{ $\bar{n}^0(1520)$}\ \ \ \ \ \ \ $****$}
\maketitle
The neutral member of the $SU(2)$ doublet from the first excited nucleon-like multiplet with spin $3/2$. The mass and width are taken from \cite{Yao:2006px}. The lower limit on the off-shell mass is set to ensure the $N\pi$ mode is kinematically allowed and the upper limit to five times the width. Given the small mass differences for the $N\rho$ and $\Delta\pi$ modes the option of varying the branching ratios with the off-shell mass is used to pervent the unaccessible decay modes being selected. Given the small mass differences for the $N\rho$ and $\Delta\pi$ modes the option of varying the branching ratios with the off-shell mass is used to pervent the unaccessible decay modes being selected.
The $\bar{n}^0(1520)$ has mass $1520$~MeV and is unstable. The $\bar{n}^0(1520)$ has spin $3/2$, charge $0$ and is colour neutral.
 The $\bar{n}^0(1520)$ is a baryon$40$plet.The $\bar{n}^0(1520)$ has width $120$~MeV. The lower limit on the mass of the particle is $440$~MeV and the upper limit is $600$~MeV. These are the deviations from the on-shell value. The branching ratios are allowed to vary with the off-shell mass of the particle.
The properties of the particle and its antiparticle are taken to be charge-conjugate to each other.
 The PDG code is -1214.
\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 $\bar{n}^0(1520)$ (continues).}
\endfoot
\caption{The decay modes of the $\bar{n}^0(1520)$.}
\endlastfoot
\label{tab:-1214decaymodes}
0.380000 & $****$ & on & $ \bar{p}^-, \pi^+ $  & Decay of $\bar{n}^0(1520)$ to a nucleon and a pion. The branching ratio is the average of the results quoted in \cite{Yao:2006px} which places it at the upper end of the range quoted in \cite{Yao:2006px}.   & Herwig::SU3BaryonOctetOctetScalar::SU3Strong3 \\ 
\hline
0.190000 & $****$ & on & $ \bar{n}^0, \pi^0 $  & Decay of $\bar{n}^0(1520)$ to a nucleon and a pion. The branching ratio is the average of the results quoted in \cite{Yao:2006px} which places it at the upper end of the range quoted in \cite{Yao:2006px}.   & Herwig::SU3BaryonOctetOctetScalar::SU3Strong3 \\ 
\hline
0.125000 & $****$ & on & $ \bar{\Delta}^+, \pi^- $  & Decay of $\bar{n}^0(1520)$ to a $\Delta$ and a pion. The branching ratio is set to the upper limit quoted in \cite{Yao:2006px}.   & Herwig::SU3BaryonOctetDecupletScalar::SU3OctetDecuplet3 \\ 
\hline
0.115700 & $****$ & on & $ \bar{p}^-, \rho^+ $  & Decay of $\bar{n}^0(1520)$ to a nucleon and a rho. The branching ratio is set to ensure the sum is one.  This is within the range quoted in \cite{Yao:2006px}.   & Herwig::Hw64::DecayME0 \\ 
\hline
0.083333 & $****$ & on & $ \bar{\Delta}^0, \pi^0 $  & Decay of $\bar{n}^0(1520)$ to a $\Delta$ and a pion. The branching ratio is set to the upper limit quoted in \cite{Yao:2006px}.   & Herwig::SU3BaryonOctetDecupletScalar::SU3OctetDecuplet3 \\ 
\hline
0.057850 & $****$ & on & $ \bar{n}^0, \rho^0 $  & Decay of $\bar{n}^0(1520)$ to a nucleon and a rho. The branching ratio is set to ensure the sum is one. This is within the range quoted in \cite{Yao:2006px}.   & Herwig::Hw64::DecayME0 \\ 
\hline
0.041667 & $****$ & on & $ \bar{\Delta}^-, \pi^+ $  & Decay of $\bar{n}^0(1520)$ to a $\Delta$ and a pion. The branching ratio is set to the upper limit quoted in \cite{Yao:2006px}.   & Herwig::SU3BaryonOctetDecupletScalar::SU3OctetDecuplet3 \\ 
\hline
0.004150 & $***$ & on & $ \bar{n}^0, \gamma $  & Decay of $\bar{n}^0(1520)$ to a nucleon and a photon. The branching ratio is the centre of the range given in \cite{Yao:2006px}.   & Herwig::SU3BaryonOctetOctetPhoton::SU3Gamma4 \\ 
\hline
0.002300 & $***$ & on & $ \bar{n}^0, \eta $  & Decay of $\bar{n}^0(1520)$ to a nucleon and an eta meson with branching ratio from \cite{Yao:2006px}.   & Herwig::SU3BaryonOctetOctetScalar::SU3Strong3 \\ 
\hline
\end{longtable}The $\bar{n}^0(1520)$ decay modes are given in Table~\ref{tab:-1214decaymodes} and the total branching ratio is $1$.


The mass generator is \verb|n(1520)0Mass| for the $\bar{n}^0(1520)$.
The width generator is \verb|n(1520)0Width| for the $\bar{n}^0(1520)$.

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 The particle was checked by Peter Richardson at 9:16:51 on the 4th of February 2009. The most recently changed decay mode was modified at 18:42:23 on the 24th of July 2005. The particle data was last modified at 16:24:39 on the 10th of October 2006.

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