{
gROOT->Reset();

TCanvas * mycanvas = new TCanvas("myCanvas", "my Title", 1);

TChain mychain("CollectionTree");
mychain.Add("./5200_Truth_isol_500.AAN.root");


TH1F myhisto("myhisto","Missing Et", 25,0,600000);


TCut c1= "(Mu_N[0]==2)";
TCut c2= "(Mu_charge[0]==Mu_charge[1])";
TCut c3= (c1 && c2);

TCut d1= "(El_N[0]==2)";
TCut d2= "(El_charge[0]==El_charge[1])";
TCut d3= (d1 && d2);

TCut e3 = c3 || d3;

mychain->Draw("MissingEt>>myhisto",  d3);

}