[PWGLF] Add flag to analyse pp collisions (change in centrality definition) (#12632)

Co-authored-by: Chiara De Martin <chdemart@alicecerno2.cern.ch>
Co-authored-by: ALICE Action Bot <alibuild@cern.ch>

Author: 3 people

PWGLF/TableProducer/Strangeness/lambdaspincorrelation.cxx

@@ -78,6 +78,7 @@ struct lambdaspincorrelation {
   ConfigurableAxis axisMultiplicityClass{"axisMultiplicityClass", {8, 0, 80}, "multiplicity percentile for bin"};
 
   // events
+  Configurable<float> cfgEventTypepp{"cfgEventTypepp", false, "Type of collisions"};
   Configurable<float> cfgCutVertex{"cfgCutVertex", 10.0f, "Accepted z-vertex range"};
   Configurable<float> cfgCutCentralityMax{"cfgCutCentralityMax", 80.0f, "Accepted maximum Centrality"};
   Configurable<float> cfgCutCentralityMin{"cfgCutCentralityMin", 0.0f, "Accepted minimum Centrality"};
@@ -242,7 +243,7 @@ struct lambdaspincorrelation {
   Filter collisionFilter = nabs(aod::collision::posZ) < cfgCutVertex;
   Filter centralityFilter = (nabs(aod::cent::centFT0C) < cfgCutCentralityMax && nabs(aod::cent::centFT0C) > cfgCutCentralityMin);
 
-  using EventCandidates = soa::Filtered<soa::Join<aod::Collisions, aod::EvSels, aod::CentFT0Cs>>;
+  using EventCandidates = soa::Filtered<soa::Join<aod::Collisions, aod::EvSels, aod::CentFT0Cs, aod::CentFT0Ms>>;
   using AllTrackCandidates = soa::Join<aod::Tracks, aod::TracksExtra, aod::TracksDCA, aod::TrackSelection, aod::pidTPCFullPi, aod::pidTPCFullPr>;
   using ResoV0s = aod::V0Datas;
 
@@ -261,6 +262,8 @@ struct lambdaspincorrelation {
     int numbV0 = 0;
     // LOGF(info, "event collisions: (%d)", collision.index());
     auto centrality = collision.centFT0C();
+    if (cfgEventTypepp)
+      centrality = collision.centFT0M();
     auto vz = collision.posZ();
     int occupancy = collision.trackOccupancyInTimeRange();
     histos.fill(HIST("hEvtSelInfo"), 0.5);
@@ -359,6 +362,8 @@ struct lambdaspincorrelation {
     int numbV0 = 0;
     // LOGF(info, "event collisions: (%d)", collision.index());
     auto centrality = collision.centFT0C();
+    if (cfgEventTypepp)
+      centrality = collision.centFT0M();
     auto vz = collision.posZ();
     int occupancy = collision.trackOccupancyInTimeRange();
     histos.fill(HIST("hEvtSelInfo"), 0.5);