[PWGDQ] added processing of realigned MCH forward tracks

The new code allows to process tracks produced by the MCH realignment task,
as well as the planned global muon rematching task (see PR O2Physics#16678).

Author: aferrero2707

PWGDQ/Tasks/qaMatching.cxx

@@ -22,6 +22,7 @@
 #include "Common/DataModel/EventSelection.h"
 #include "Common/DataModel/Multiplicity.h"
 #include "Common/DataModel/TrackSelectionTables.h"
+#include "Common/DataModel/FwdTrackReAlignTables.h"
 #include "Tools/ML/MlResponse.h"
 
 #include <CCDB/BasicCCDBManager.h>
@@ -178,6 +179,7 @@ DECLARE_SOA_INDEX_COLUMN_FULL_CUSTOM(Candidate, candidate, int32_t, o2::aod::QaM
 
 using MyEvents = soa::Join<aod::Collisions, aod::EvSels, aod::FT0Mults, aod::MFTMults, aod::PVMults, aod::CentFT0Ms, aod::CentFT0As, aod::CentFT0Cs>;
 using MyMuons = soa::Join<aod::FwdTracks, aod::FwdTracksCov>;
+using MyMuonsReAlign = soa::Join<aod::FwdTracksReAlign, aod::FwdTrksCovReAlign>;
 using MyMuonsMC = soa::Join<aod::FwdTracks, aod::FwdTracksCov, aod::McFwdTrackLabels, aod::FwdTracksDCA, aod::FwdTrkCompColls>;
 using MyMFTs = aod::MFTTracks;
 using MyMFTCovariances = aod::MFTTracksCov;
@@ -3233,6 +3235,33 @@ struct QaMatching {
   }
 
   PROCESS_SWITCH(QaMatching, processQA, "processQA", false);
+
+  void processQAReAlign(MyEvents const& collisions,
+                        aod::BCsWithTimestamps const& bcs,
+                        MyMuonsReAlign const& muonTracks,
+                        MyMFTs const& mftTracks,
+                        MyMFTCovariances const& mftCovs)
+  {
+    auto bc = bcs.begin();
+    initCcdb(bc);
+
+    for (const auto& muon : muonTracks) {
+      registry.get<TH1>(HIST("nTracksPerType"))->Fill(static_cast<int>(muon.trackType()));
+    }
+
+    mftTrackCovs.clear();
+    for (const auto& mftTrackCov : mftCovs) {
+      mftTrackCovs[mftTrackCov.matchMFTTrackId()] = mftTrackCov.globalIndex();
+    }
+
+    fillCollisions<false>(collisions, bcs, muonTracks, mftTracks, mftCovs, fCollisionInfos);
+
+    for (auto const& [collisionIndex, collisionInfo] : fCollisionInfos) {
+      processCollision<false>(collisionInfo, collisions, bcs, muonTracks, mftTracks, mftCovs);
+    }
+  }
+
+  PROCESS_SWITCH(QaMatching, processQAReAlign, "processQAReAlign", false);
 };
 
 WorkflowSpec defineDataProcessing(ConfigContext const& cfgc)