From 677e2efb1f45f8b06925c28eb57c7be71f3ffbe4 Mon Sep 17 00:00:00 2001
From: Daiki Sekihata <daiki.sekihata@cern.ch>
Date: Tue, 8 Sep 2026 15:50:28 +0200
Subject: [PATCH] [PWGEM/Dilepton] remove unnecessary histogram from single
 muon QC MC

---
 PWGEM/Dilepton/Core/SingleTrackQCMC.h | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/PWGEM/Dilepton/Core/SingleTrackQCMC.h b/PWGEM/Dilepton/Core/SingleTrackQCMC.h
index 947530afce5..314265b4e6b 100644
--- a/PWGEM/Dilepton/Core/SingleTrackQCMC.h
+++ b/PWGEM/Dilepton/Core/SingleTrackQCMC.h
@@ -397,7 +397,6 @@ struct SingleTrackQCMC {
         fRegistry.add("Track/PromptLF/positive/hPtGen_DeltaPtOverPtGen", "muon p_{T} resolution;p_{T}^{gen} (GeV/c);(p_{T}^{rec} - p_{T}^{gen})/p_{T}^{gen}", o2::framework::HistType::kTH2F, {{200, 0, 10}, {200, -1.0f, 1.0f}}, true);
         fRegistry.add("Track/PromptLF/positive/hPtGen_DeltaEta", "muon #eta resolution;p_{T}^{gen} (GeV/c);#eta^{rec} - #eta^{gen}", o2::framework::HistType::kTH2F, {{200, 0, 10}, {100, -0.05f, 0.05f}}, true);
         fRegistry.add("Track/PromptLF/positive/hPtGen_DeltaPhi", "muon #varphi resolution;p_{T}^{gen} (GeV/c);#varphi^{rec} - #varphi^{gen} (rad.)", o2::framework::HistType::kTH2F, {{200, 0, 10}, {100, -0.05f, 0.05f}}, true);
-        fRegistry.add("Track/PromptLF/positive/hdR_Chi2MatchMCHMFT", "dr vs. matching chi2 MCH-MFT;chi2 match MCH-MFT;#DeltaR;", o2::framework::HistType::kTH2F, {{200, 0.0f, 100}, {200, 0, 0.5}}, false);
         fRegistry.add("Track/PromptLF/positive/hLog10Chi2IP", "chi2IP;log_{10}(#chi^{2}_{IP})", o2::framework::HistType::kTH1F, {{100, -5, 5}}, false);
       }
       fRegistry.addClone("Track/PromptLF/positive/", "Track/PromptLF/negative/");
@@ -795,7 +794,6 @@ struct SingleTrackQCMC {
         fRegistry.fill(HIST("Track/") + HIST(lepton_source_types[lepton_source_id]) + HIST("positive/hChi2MatchMCHMID_Pt"), track.pt(), track.chi2MatchMCHMID());
         fRegistry.fill(HIST("Track/") + HIST(lepton_source_types[lepton_source_id]) + HIST("positive/hChi2MatchMCHMFT_Pt"), track.pt(), track.chi2MatchMCHMFT());
         fRegistry.fill(HIST("Track/") + HIST(lepton_source_types[lepton_source_id]) + HIST("positive/hMFTClusterMap"), track.mftClusterMap());
-        fRegistry.fill(HIST("Track/") + HIST(lepton_source_types[lepton_source_id]) + HIST("positive/hdR_Chi2MatchMCHMFT"), track.chi2MatchMCHMFT(), std::sqrt(deta * deta + dphi * dphi));
         fRegistry.fill(HIST("Track/") + HIST(lepton_source_types[lepton_source_id]) + HIST("positive/hLog10Chi2IP"), std::log10(track.chi2IP()));
         fRegistry.fill(HIST("Track/") + HIST(lepton_source_types[lepton_source_id]) + HIST("positive/hPtGen_DeltaPtOverPtGen"), mctrack.pt(), (track.pt() - mctrack.pt()) / mctrack.pt());
         fRegistry.fill(HIST("Track/") + HIST(lepton_source_types[lepton_source_id]) + HIST("positive/hPtGen_DeltaEta"), mctrack.pt(), track.eta() - mctrack.eta());
@@ -830,7 +828,6 @@ struct SingleTrackQCMC {
         fRegistry.fill(HIST("Track/") + HIST(lepton_source_types[lepton_source_id]) + HIST("negative/hChi2MatchMCHMID_Pt"), track.pt(), track.chi2MatchMCHMID());
         fRegistry.fill(HIST("Track/") + HIST(lepton_source_types[lepton_source_id]) + HIST("negative/hChi2MatchMCHMFT_Pt"), track.pt(), track.chi2MatchMCHMFT());
         fRegistry.fill(HIST("Track/") + HIST(lepton_source_types[lepton_source_id]) + HIST("negative/hMFTClusterMap"), track.mftClusterMap());
-        fRegistry.fill(HIST("Track/") + HIST(lepton_source_types[lepton_source_id]) + HIST("negative/hdR_Chi2MatchMCHMFT"), track.chi2MatchMCHMFT(), std::sqrt(deta * deta + dphi * dphi));
         fRegistry.fill(HIST("Track/") + HIST(lepton_source_types[lepton_source_id]) + HIST("negative/hLog10Chi2IP"), std::log10(track.chi2IP()));
         fRegistry.fill(HIST("Track/") + HIST(lepton_source_types[lepton_source_id]) + HIST("negative/hPtGen_DeltaPtOverPtGen"), mctrack.pt(), (track.pt() - mctrack.pt()) / mctrack.pt());
         fRegistry.fill(HIST("Track/") + HIST(lepton_source_types[lepton_source_id]) + HIST("negative/hPtGen_DeltaEta"), mctrack.pt(), track.eta() - mctrack.eta());