\section{Particle properties in EvtGen}

\label{sect:pdttable}
\index{evt.pdl}
\index{particle properties}

In EvtGen, all particle property information is
contained within {\tt evt.pdl} and is parsed
at runtime.  Each line in {\tt evt.pdl} corresponds
to a particle, and has the form
\begin{verbatim}
add  p Lepton  mu-       13  0.1056584  0     0   -3  1 658654.  13
add  p Lepton  mu+      -13  0.1056584  0     0    3  1 658654.   0
add  p Meson   pi+      211  0.139570   0     0    3  0  7804.5 101
add  p Meson   pi-     -211  0.139570   0     0   -3  0  7804.5   0
add  p Meson   rho+     213  0.7685     0.151 0.4  3  2       0 121
add  p Meson   rho-    -213  0.7685     0.151 0.4 -3  2       0   0
add  p Meson   D0       421  1.86451    0     0    0  0  0.1244 105
add  p Meson   anti-D0 -421  1.86451    0     0    0  0  0.1244   0
\end{verbatim}
The first three columns are not used in EvtGen.  The fourth column
corresponds to the particle name.  The fifth column is the particle
number according to the stdhep numbering scheme.  
The sixth through eighth columns
contain the mass, width, and maximum allowed deviation from the mean mass
in the downward direction,
respectively.  The nineth column contains 3 times the charge of the particle.
The tenth column contains twice the spin.  The eleventh column is $c \tau$
in mm.  The twelvth column is the Lund-KC number. This is used for the
interface to JetSet and has to match what is in lucomp.F.