[Clas12_verystrange] Resolved Omega- issue

Michael Dugger dugger at jlab.org
Fri Feb 24 14:42:33 EST 2012


Hi,

I have now found the answer to my original question as to whether my Omega 
plot looked reasonable.

The problem: The cross section weighting for the Omega- was too large when 
I simply scaled the neutral cascade cross section by 1/10. The effective 
cross section I reported earlier was measured after the detection 
efficiency, so it was just dumb luck that the effective cross 
section ended up near the value that we wanted BEFORE the simulated 
detector response.

I put in 0.3 nb for the Omega- cross section (as Igor requested) and 
got the plot attached (OmegaMNew.gif).

The bad news: The Omega- signal I get is consistent with Derek's and is 
a sad little guy :(

Take care,
Michael
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