[Halld-physics] [EXTERNAL] eta,pi0,p reconstruction efficiency

[Richard Jones]

Follow-up on reconstruction efficiency of the simulation eta,pi0,p final
state discussed at today's amplitude analysis meeting, I looked back at the
Monte Carlo generator input file (genr8) for the trial sample I presented
today. If you read between the lines in the file below, you see that I
forced the 2gamma decays of both the eta and the pi0. So the 25% efficiency
is all reconstruction, none of it belongs in the eta branching fraction.
That was my memory misfiring.

-Richard Jones

% beamp.x beamp.y beamp.z beamMass
0 0 9 0
% targetp.x targetp.y targetp.z targetMass
0 0 0 0.938
% t-channelSlope
      5.0
% number of particles needed to describe the isobar decay of X
8
%
% particle# 0&1 are always the X&Y
%part#  chld1#  chld2#  parent# Id     nchild   mass    width   charge  flag
% baryon (Y) decay
 0       *      *       *       14      0       0.938   0.0     1       11
% meson (X) decay
 1       2      3       *       0       2       1.500   0.300   0       00
 2       4      5       1       0       2       0.548   0       0       00
 3       6      7       1       7       2       0.135   0       0       01
 4       *      *       2       1       0       0       0       0       10
 5       *      *       2       1       0       0       0       0       10
 6       *      *       3       1       0       0       0       0       10
 7       *      *       3       1       0       0       0       0       10
!EOI
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