[G12] G12 Normalization fix SOLVED

Michael C. Kunkel mkunkel at jlab.org
Mon Apr 21 10:20:50 EDT 2014


Greetings,

I have solved the G12 normalization. I do not know the cause, but I know 
the fix. I performed my study using 3 topologies:
1) Proton Pi+ missing Pi-
2) Proton Pi- missing Pi+
3) Pi+ Pi- missing Proton

I skimmed data and phasespace MC alike. I then looked at the efficiency 
of reconstructing the missing particle via missing mass techniques. Once 
the particle was reconstructed, I compared the reconstructed values of 
the missing particles to when the reconstructed particle was detected in 
CLAS.
I then binned each topologies into bins of MVRT z, momentum, theta/phi 
for both data and MC.

The study showed that the MC was over efficient. I applied a correction 
according to the efficiency mapping I created and preformed  the 
XSection study.

See 
http://www.jlab.org/Hall-B/secure/g12/mkunkel/XSECTION/G12_XSection_Normaization_Compare.pdf
for comparison plots of the static normalization to a dynamic efficiency 
normalization.

BR
MK


More information about the G12 mailing list