Some reworks

EventFiltering/PWGUD/DGHelpers.h

@@ -103,18 +103,30 @@ struct DGSelector {
 
     // no global tracks which are not vtx tracks
     // no vtx tracks which are not global tracks
+    auto rgtrwTOF = 0.;
     for (auto& track : tracks) {
       if (track.isGlobalTrack() && !track.isPVContributor()) {
         return 3;
       }
       if (diffCuts.globalTracksOnly() && !track.isGlobalTrack() && track.isPVContributor()) {
         return 4;
       }
+
+      // update fraction of PV tracks with TOF hit
+      if (track.isPVContributor() && track.hasTOF()) {
+        rgtrwTOF += 1.;
+      }
+    }
+    if (collision.numContrib() > 0) {
+      rgtrwTOF /= collision.numContrib();
+    }
+    if (rgtrwTOF < diffCuts.minRgtrwTOF()) {
+      return 5;
     }
 
     // number of vertex tracks
     if (collision.numContrib() < diffCuts.minNTracks() || collision.numContrib() > diffCuts.maxNTracks()) {
-      return 5;
+      return 6;
     }
 
     // PID, pt, and eta of tracks, invariant mass, and net charge
@@ -135,18 +147,18 @@ struct DGSelector {
 
         // PID
         if (!hasGoodPID(diffCuts, track)) {
-          return 6;
+          return 7;
         }
 
         // pt
         lvtmp.SetXYZM(track.px(), track.py(), track.pz(), mass2Use);
         if (lvtmp.Perp() < diffCuts.minPt() || lvtmp.Perp() > diffCuts.maxPt()) {
-          return 7;
+          return 8;
         }
 
         // eta
         if (lvtmp.Eta() < diffCuts.minEta() || lvtmp.Eta() > diffCuts.maxEta()) {
-          return 8;
+          return 9;
         }
         netCharge += track.sign();
         ivm += lvtmp;
@@ -155,11 +167,11 @@ struct DGSelector {
 
     // net charge
     if (netCharge < diffCuts.minNetCharge() || netCharge > diffCuts.maxNetCharge()) {
-      return 9;
+      return 10;
     }
     // invariant mass
     if (ivm.M() < diffCuts.minIVM() || ivm.M() > diffCuts.maxIVM()) {
-      return 10;
+      return 11;
     }
 
     // if we arrive here then the event is good!

EventFiltering/PWGUD/diffractionFilter.cxx

@@ -84,20 +84,21 @@ struct DGFilterRun3 {
   //   4: number of FwdTracks > 0
   //   5: not all global tracks are vtx tracks
   //   6: not all vtx tracks are global tracks
-  //   7: number of vtx tracks out of range
-  //   8: has not good PID information
-  //   9: track pt out of range
-  //  10: track eta out of range
-  //  11: net charge out of range
-  //  12: IVM out of range
+  //   7: fraction of tracks with TOF hit too low
+  //   8: number of vtx tracks out of range
+  //   9: has not good PID information
+  //  10: track pt out of range
+  //  11: track eta out of range
+  //  12: net charge out of range
+  //  13: IVM out of range
   static constexpr std::string_view histNames[4] = {"aftercut2pi", "aftercut4pi", "aftercut2K", "aftercut4K"};
   HistogramRegistry registry{
     "registry",
     {
-      {histNames[0].data(), "#aftercut2pi", {HistType::kTH1F, {{12, -0.5, 11.5}}}},
-      {histNames[1].data(), "#aftercut4pi", {HistType::kTH1F, {{12, -0.5, 11.5}}}},
-      {histNames[2].data(), "#aftercut2K", {HistType::kTH1F, {{12, -0.5, 11.5}}}},
-      {histNames[3].data(), "#aftercut4K", {HistType::kTH1F, {{12, -0.5, 11.5}}}},
+      {histNames[0].data(), "#aftercut2pi", {HistType::kTH1F, {{13, -0.5, 12.5}}}},
+      {histNames[1].data(), "#aftercut4pi", {HistType::kTH1F, {{13, -0.5, 12.5}}}},
+      {histNames[2].data(), "#aftercut2K", {HistType::kTH1F, {{13, -0.5, 12.5}}}},
+      {histNames[3].data(), "#aftercut4K", {HistType::kTH1F, {{13, -0.5, 12.5}}}},
     }};
 
   void init(InitContext&)

PWGUD/Core/UDHelperFunctions.h

@@ -0,0 +1,58 @@
+// Copyright 2019-2020 CERN and copyright holders of ALICE O2.
+// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
+// All rights not expressly granted are reserved.
+//
+// This software is distributed under the terms of the GNU General Public
+// License v3 (GPL Version 3), copied verbatim in the file "COPYING".
+//
+// In applying this license CERN does not waive the privileges and immunities
+// granted to it by virtue of its status as an Intergovernmental Organization
+// or submit itself to any jurisdiction.
+///
+/// \brief
+/// \author Paul Buehler, paul.buehler@oeaw.ac.at
+/// \since  01.10.2021
+
+#ifndef O2_ANALYSISUDHEPLER_H_
+#define O2_ANALYSISUDHEPLER_H_
+
+#include "Framework/Logger.h"
+#include "CommonConstants/LHCConstants.h"
+#include "Common/DataModel/EventSelection.h"
+
+using namespace o2;
+using namespace o2::framework;
+
+// .............................................................................
+// return net charge of PV tracks
+template <typename TCs>
+int8_t netCharge(TCs tracks)
+{
+  int8_t nch = 0;
+  for (auto track : tracks) {
+    if (track.isPVContributor()) {
+      nch += track.sign();
+    }
+  }
+  return nch;
+}
+
+// .............................................................................
+// return fraction of PV tracks with a TOF hit
+template <typename TCs>
+float rPVtrwTOF(TCs tracks, int nPVTracks)
+{
+  float rpvrwTOF = 0.;
+  for (auto& track : tracks) {
+    if (track.isPVContributor() && track.hasTOF()) {
+      rpvrwTOF += 1.;
+    }
+  }
+  if (nPVTracks > 0) {
+    rpvrwTOF /= nPVTracks;
+  }
+  return rpvrwTOF;
+}
+
+// -----------------------------------------------------------------------------
+#endif // O2_ANALYSISUDHEPLER_H_

PWGUD/DataModel/DGCandidates.h

@@ -23,11 +23,13 @@ namespace o2::aod
 namespace dgcand
 {
 DECLARE_SOA_COLUMN(NetCharge, netCharge, int8_t); //! Sum of track signs
+DECLARE_SOA_COLUMN(RgtrwTOF, rgtrwTOF, float);    //! Fraction of global tracks with TOF hit
+
 } // namespace dgcand
 DECLARE_SOA_TABLE(DGCandidates, "AOD", "DGCANDIDATES", //! Table with DG candidates
                   o2::soa::Index<>, bc::RunNumber, timestamp::Timestamp,
                   collision::PosX, collision::PosY, collision::PosZ,
-                  collision::NumContrib, dgcand::NetCharge);
+                  collision::NumContrib, dgcand::NetCharge, dgcand::RgtrwTOF);
 using DGCandidate = DGCandidates::iterator;
 
 namespace dgtrack

PWGUD/TableProducer/DGCandProducer.cxx

@@ -52,24 +52,13 @@
 #include "Framework/AnalysisTask.h"
 
 #include "EventFiltering/PWGUD/DGHelpers.h"
+#include "PWGUD/Core/UDHelperFunctions.h"
 #include "PWGUD/DataModel/DGCandidates.h"
 
 using namespace o2;
 using namespace o2::framework;
 using namespace o2::framework::expressions;
 
-template <typename TCs>
-int8_t netCharge(TCs tracks)
-{
-  int8_t nch = 0;
-  for (auto track : tracks) {
-    if (track.isPVContributor()) {
-      nch += track.sign();
-    }
-  }
-  return nch;
-}
-
 struct DGCandProducer {
 
   // get a DGCutparHolder
@@ -120,7 +109,7 @@ struct DGCandProducer {
       // update DGCandidates tables
       outputCollisions(bc.runNumber(), bc.timestamp(),
                        collision.posX(), collision.posY(), collision.posZ(),
-                       collision.numContrib(), netCharge(tracks));
+                       collision.numContrib(), netCharge(tracks), rPVtrwTOF(tracks, collision.numContrib()));
 
       // update DGTracks tables
       for (auto& track : tracks) {

PWGUD/Tasks/DGCandAnalyzer.cxx

@@ -85,6 +85,11 @@ struct DGCandAnalyzer {
       return;
     }
 
+    // skip events with out-of-range rgtrwTOF
+    if (dgcand.rgtrwTOF() < diffCuts.minRgtrwTOF()) {
+      return;
+    }
+
     // find track combinations which are compatible with anaPars.TPCnSigmas()
     auto nIVMs = pidsel.computeIVMs(anaPars.nCombine(), dgtracks);