[Frost] Brians plots

[Michael Dugger]

Hi,

For those of you that don't feel like opening up a root session, I have 
taken one of Brian's plots and put it on the web.

The plot is for momentum between 375 and 400 MeV/c and proton angle 
between 10 and 20 degrees (momentum and theta are lab frame) can be found 
at
http://www.jlab.org/~dugger/g9/g9a/tmp/mvrtp375T15.gif
As Brian stated in his email, this plot uses MVRT and comes from the 
reaction "gamma p -> p pi+ pi-".

This plot should be compared to the z-vertex plot I showed for "gamma p -> 
p X" at
http://www.jlab.org/~dugger/g9/g9a/tmp/T15-p375.gif

The improvement of the vertex resolution when using MVRT is dramatic.

I'll show some more of this sort of thing tomorrow.

Take care,
Michael