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The macro punzi_eff_bg_separated.C was created for that, and I'm calculating 2 types of efficiencies: in one of them, I'm summing (BGeff*BGxsec) and then multiplying it by 40000 (that is the luminosity required); in the other one, I'm summing (nBGfin/nBGini), than multiplying by the sum of (BGxsec) and than multiplying by 40000. The punzi eff is being calculated as sigeff/sqrt(1+BG), where BG is (nBGfin/nBGini)*BGxsec*lumin. I'm having some numerical problems since C++ doesn't want to show me the values of the calculations because nfin/nini << 1. I'll try some procedures to make it work.  
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> >  12/07/2019In the last days I've been calculating the efficiencies of some cuts in the events. The files are named as punzieff_something, and the results are pretty impressive. I still need (in some of the graphs of eff_BG x eff_sig) to find the right values of the cuts for each dot. Besides that, I've talked to Thiago, and we decided to simulate more processes for the dark Higgs signal with different m_{d{H}} and m_{Z'}. The tables below comprise the values of the cross sections for those processes (300k events were simulated for each pair of masses, using access2 from gridunesp): *m_{Z'} = 1100 GeV, m_{\chi} = 100 GeV:
*m_{d_{H}} = 70 GeV, m_{\chi} = 100 GeV:
 
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