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\title{\boldmath{ $\Upsilon(4S)$}\ \ \ \ \ \ \ $*****$}
\maketitle
The $\Upsilon(4S)$ is the lightest $\Upsilon$ state which can decay to $B\bar{B}$. The mass and width are taken from \cite{Yao:2006px}. The $\Upsilon(4S)$ is allowed to be off-shell by the width below the central value of the mass to ensure the dominant decays are allowed and by ten times the width above the central value.
The $\Upsilon(4S)$ has mass $10579.4$~MeV and is unstable. The $\Upsilon(4S)$ has spin $1$, charge $0$ and is colour neutral.
 The $\Upsilon(4S)$ is a meson and is from the $4^3S_1$ multiplet.The $\Upsilon(4S)$ has width $20.5$~MeV. The lower limit on the mass of the particle is $20.5$~MeV and the upper limit is $205$~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 300553.
\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 $\Upsilon(4S)$ (continues).}
\endfoot
\caption{The decay modes of the $\Upsilon(4S)$.}
\endlastfoot
\label{tab:300553decaymodes}
0.505812 & $*****$ & on & $ B^+, B^- $  & Decay of $\Upsilon(4S)$ with branching ratio from \cite{Yao:2006px}.   & Herwig::VectorMeson2Meson::Vector2Meson \\ 
\hline
0.493811 & $*****$ & on & $ B^0, \bar{B}^0 $  & Decay of $\Upsilon(4S)$ with branching ratio from \cite{Yao:2006px}.   & Herwig::VectorMeson2Meson::Vector2Meson \\ 
\hline
0.000129 & $****$ & on & $ \Upsilon(2S), \pi^+, \pi^- $  & Decay of $\Upsilon(4S)$ with branching ratio taken from \cite{Aubert:2006bm}  for the charged mode and the neutral mode infered from isospin conservation    & Herwig::OniumToOniumPiPi::OniumPiPi \\ 
\hline
0.000090 & $****$ & on & $ \Upsilon(1S), \pi^+, \pi^- $  & Decay of $\Upsilon(4S)$ with branching ratio taken from \cite{Aubert:2006bm}  for the charged mode and the neutral mode infered from isospin conservation    & Herwig::OniumToOniumPiPi::OniumPiPi \\ 
\hline
0.000065 & $***$ & on & $ \Upsilon(2S), \pi^0, \pi^0 $  & Decay of $\Upsilon(4S)$ with branching ratio taken from \cite{Aubert:2006bm}  for the charged mode and the neutral mode infered from isospin conservation    & Herwig::OniumToOniumPiPi::OniumPiPi \\ 
\hline
0.000045 & $***$ & on & $ \Upsilon(1S), \pi^0, \pi^0 $  & Decay of $\Upsilon(4S)$ with branching ratio taken from \cite{Aubert:2006bm}  for the charged mode and the neutral mode infered from isospin conservation    & Herwig::OniumToOniumPiPi::OniumPiPi \\ 
\hline
0.000016 & $****$ & on & $ e^-, e^+ $  & Leptonic decay of $\Upsilon(4S)$. The electron mode has been measured and the other modes are calculated from this using the decayer.   & Herwig::VectorMeson2Fermion::Vector2Leptons \\ 
\hline
0.000016 & $***$ & on & $ \mu^-, \mu^+ $  & Leptonic decay of $\Upsilon(4S)$. The electron mode has been measured and the other modes are calculated from this using the decayer.   & Herwig::VectorMeson2Fermion::Vector2Leptons \\ 
\hline
0.000016 & $***$ & on & $ \tau^-, \tau^+ $  & Leptonic decay of $\Upsilon(4S)$. The electron mode has been measured and the other modes are calculated from this using the decayer.   & Herwig::VectorMeson2Fermion::Vector2Leptons \\ 
\hline
\end{longtable}The $\Upsilon(4S)$ decay modes are given in Table~\ref{tab:300553decaymodes} and the total branching ratio is $1$.


The mass generator is \verb|Upsilon4Smass| for the $\Upsilon(4S)$.
The width generator is \verb|Upsilon4Swidth| for the $\Upsilon(4S)$.

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 The particle was checked by Peter Richardson at 20:13:5 on the 2nd of August 2007. The most recently changed decay mode was modified at 13:34:17 on the 2nd of July 2007. The particle data was last modified at 22:40:8 on the 23rd of April 2007.

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