[G8b_run] g8 meeting this week

[Eugene Pasyuk]

Brian,

When I look at the plots on page 16 what strikes me is not a difference 
in angular distribution but in the proton momentum spectrum. The 
momentum from MC seems significantly higher. When I compare g8 and g11 
plots there the difference makes sense, for g11 momentum seems a bit 
higher which one would expect because the photon energy is higher.
A few thing come to mined. Are you sure that event generator produces 
correct events? Could you feed the same events in gsim with g11 
geometry? The other thing might be torus field, as if you run gsim woth 
one field and cooked with different field. A thing to check would be to 
compare event by event thrown and reconstructed momentum. Do they match?

-Eugene


Brian Vernarsky wrote, On 11/01/11 20:37:
> Hi all, I plan on asking you all about a problem I've been having with
> getting the monte carlo to match the data in g8b tomorrow, but I
> thought I'd post the pdf beforehand so you'll have a chance to think
> about it before the meeting if you get a chance.  Please find the pdf
> at the below link an if you have any ideas for a solution I'd love to
> hear them.
>
> http://www.andrew.cmu.edu/user/bvernars/g8b_forward_angle_prob.pdf
>
> Brian
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