{
 TH1F* hjt20 = J20_dist_pt.Clone();
 TH1F* hjt20trig = J20_dist_L1_pt.Clone();
 
 TH1F* hjt20_int = J20_dist_pt.Clone();
 TH1F* hjt20trig_int = J20_dist_L1_pt.Clone();
  
 for (i=1;i<=60;i++) {
   Float_t sum = 0;
   for (ii=60;ii>=i;ii--) sum += hjt20trig->GetBinContent(ii); 
   hjt20trig_int->SetBinContent(i,sum);
 }
 Float_t sum = 0;
 for (i=1;i<=60;i++) {
   Float_t sum = 0;
   for (ii=60;ii>=i;ii--) sum += hjt20->GetBinContent(ii); 
   hjt20_int->SetBinContent(i,sum);
 }
 
 hjt20trig_int->Sumw2(); hjt20_int->Sumw2(); 
 
 TH1F* heffint = (TH1F*) hjt20_int->Clone("heffint");
 heffint->Divide(hjt20,hjt20trig,1,1,"B");
 heffint->SetTitle("Trigger efficiency for JT20");
 heffint->GetXaxis()->SetTitle("pT of matched jet, GeV");
 heffint->Draw(); 
}