[Frost] New findings for FROST momentum problems

[Brian Vernarsky]

Greetings all,

I have been continuing to work on finding the source of the momentum
discrepancies we see between the butanol and CH2 targets.  I tried to
look into the tracking code, but could not find any problems there.
So I started to look at some other reactions than the gamma p -> p pi+
pi- () reaction, and when I looked at the single track reactions I
found what might be the source of our problem, the start counters.  I
have written up all of my findings in a presentation you can find at:

http://www.andrew.cmu.edu/user/bvernars/FROST_update_2010-11-17.pdf

It is a somewhat large file, around 10 Mb.  Please let me know if you
have any questions or ideas.  Thanks

Brian