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\title{\boldmath{ $D_1^0(2420)$}\ \ \ \ \ \ \ $****$}
\maketitle
The $D_1^0(2420)$ is the lightest neutral pseudovector charm state. The mass and width are taken from \cite{Yao:2006px}. We assume that only the $D^*\pi$ mode exists with relative fraction of the two modes given by isospin. The $D_1^0(2420)$ is allowed to be off-shell by five times the width. 
The $D_1^0(2420)$ has mass $2422.3$~MeV and is unstable. The $D_1^0(2420)$ has spin $1$, charge $0$ and is colour neutral.
 The $D_1^0(2420)$ is a meson and is from the $1^1P_1$ multiplet.The $D_1^0(2420)$ has width $20.4$~MeV. The lower limit on the mass of the particle is $102$~MeV and the upper limit is $102$~MeV. These are the deviations from the on-shell value. The branching ratios are fixed.
The properties of the particle and its antiparticle are taken to be charge-conjugate to each other.
 The PDG code is 10423.
\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 $D_1^0(2420)$ (continues).}
\endfoot
\caption{The decay modes of the $D_1^0(2420)$.}
\endlastfoot
\label{tab:10423decaymodes}
0.666667 & $****$ & on & $ D^{*+}(2010), \pi^- $  & The only observed decay of $D_1^0(2420)$. The branching ratio comes from assuming the other mode required by isospin exists and using isospin to get the branching ratios.   & Herwig::PVectorMesonVectorPScalar::PVectorVP \\ 
\hline
0.333333 & $****$ & on & $ D^{*0}(2007), \pi^0 $  & This mode was included as it is required by isospin given the observed mode and the branching ratio calculated.   & Herwig::PVectorMesonVectorPScalar::PVectorVP \\ 
\hline
\end{longtable}The $D_1^0(2420)$ decay modes are given in Table~\ref{tab:10423decaymodes} and the total branching ratio is $1$.


The mass generator is \verb|D_10mass| for the $D_1^0(2420)$.
The width generator is \verb|D_10width| for the $D_1^0(2420)$.

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 The particle was checked by Peter Richardson at 12:3:40 on the 15th of April 2007. The most recently changed decay mode was modified at 23:10:55 on the 3rd of April 2005. The particle data was last modified at 12:31:23 on the 17th of October 2006.

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