PWGMM: dndeta: fix dczXY cut not applied when dcaZ cut is custom (#3625)

Author: aalkin

PWGMM/Mult/Tasks/dndeta.cxx

@@ -57,6 +57,9 @@ static constexpr TrackSelectionFlags::flagtype trackSelectionTPC =
 static constexpr TrackSelectionFlags::flagtype trackSelectionDCA =
   TrackSelectionFlags::kDCAz | TrackSelectionFlags::kDCAxy;
 
+static constexpr TrackSelectionFlags::flagtype trackSelectionDCAXYonly =
+  TrackSelectionFlags::kDCAxy;
+
 using LabeledTracks = soa::Join<aod::Tracks, aod::McTrackLabels>;
 using ReTracks = soa::Join<aod::ReassignedTracksCore, aod::ReassignedTracksExtra>;
 
@@ -363,14 +366,16 @@ struct MultiplicityCounter {
   //                                                       ncheckbit(aod::track::detectorMap, (uint8_t)o2::aod::track::TPC) &&
   //                                                       ncheckbit(aod::track::trackCutFlag, trackSelectionITS) &&
   //                                                       ncheckbit(aod::track::trackCutFlag, trackSelectionTPC) &&
-  //                                                       ifnode(dcaZ.node() > 0.f, nabs(aod::track::dcaZ) <= dcaZ, ncheckbit(aod::track::trackCutFlag, trackSelectionDCA));
+  //                                                       ifnode(dcaZ.node() > 0.f, nabs(aod::track::dcaZ) <= dcaZ  && ncheckbit(aod::track::trackCutFlag, trackSelectionDCAXYonly),
+  //                                                              ncheckbit(aod::track::trackCutFlag, trackSelectionDCA));
 
   //   require a mix of ITS+TPC and ITS-only tracks
   expressions::Filter trackSelectionProperMixed = ncheckbit(aod::track::detectorMap, (uint8_t)o2::aod::track::ITS) &&
                                                   ncheckbit(aod::track::trackCutFlag, trackSelectionITS) &&
                                                   ifnode(ncheckbit(aod::track::detectorMap, (uint8_t)o2::aod::track::TPC),
                                                          ncheckbit(aod::track::trackCutFlag, trackSelectionTPC), true) &&
-                                                  ifnode(dcaZ.node() > 0.f, nabs(aod::track::dcaZ) <= dcaZ, ncheckbit(aod::track::trackCutFlag, trackSelectionDCA));
+                                                  ifnode(dcaZ.node() > 0.f, nabs(aod::track::dcaZ) <= dcaZ && ncheckbit(aod::track::trackCutFlag, trackSelectionDCAXYonly),
+                                                         ncheckbit(aod::track::trackCutFlag, trackSelectionDCA));
 
   expressions::Filter atrackFilter = (aod::track::bestCollisionId >= 0) &&
                                      (ifnode(dcaZ.node() > 0.f, nabs(aod::track::bestDCAZ) <= dcaZ, nabs(aod::track::bestDCAZ) <= 2.0f)) &&