Resolve "pi0 resolution for ECal barrel"

Closes #19 (closed)

benchmarks/barrel_ecal/scripts/emcal_barrel_pions_analysis.cxx

@@ -194,8 +194,8 @@ void emcal_barrel_pions_analysis(const char* input_fname = "sim_output/sim_emcal
   c5->SaveAs("results/emcal_barrel_pions_pid.pdf");
 
   //Energy Resolution Work
-  auto hdE          = d1.Histo1D({"hdE",      "dE; dE[GeV]; Events",              20, -7.5, 7.5}, "dE");//changed from 100
-  auto hdE_rel      = d1.Histo1D({"hdE_rel",  "dE Relative; dE Relative; Events", 20, -2, 2}, "dE_rel");//changed from 100
+  auto hdE          = d2.Histo1D({"hdE",      "dE; dE[GeV]; Events",              20, -7.5, 7.5}, "dE");//changed from 100
+  auto hdE_rel      = d2.Histo1D({"hdE_rel",  "dE Relative; dE Relative; Events", 20, -2, 2}, "dE_rel");//changed from 100
   hdE_rel->Fit("gaus", "", "", -2,  2);
   double* res       = hdE_rel->GetFunction("gaus")->GetParameters();