New selections on eta and rigidity

Adds new configurable parameters for the He3 Lambda analysis:
- `etaMax`: Maximum He3 pseudorapidity
- `minTPCrigidity`: Minimum He3 rigidity

These parameters are used to further refine the He3 selection criteria
in the analysis.

Author: mpuccio

PWGLF/TableProducer/Nuspex/he3LambdaAnalysis.cxx

@@ -162,6 +162,8 @@ struct he3LambdaAnalysis {
     std::string prefix = "cfgHe3";
     Configurable<float> ptMin{"ptMin", 1.0f, "Minimum He3 pT"};
     Configurable<float> ptMax{"ptMax", 10.0f, "Maximum He3 pT"};
+    Configurable<float> etaMax{"etaMax", 0.8f, "Maximum He3 pseudorapidity"};
+    Configurable<float> minTPCrigidity{"minTPCrigidity", 0.5f, "Minimum He3 rigidity"};
     Configurable<float> nSigmaTPCMax{"nSigmaTPCMax", 4.0f, "Maximum He3 TPC nSigma"};
     Configurable<float> dcaxyMax{"dcaxyMax", 0.5f, "Maximum He3 DCA xy"};
     Configurable<float> dcazMax{"dcazMax", 0.5f, "Maximum He3 DCA z"};
@@ -311,14 +313,11 @@ struct he3LambdaAnalysis {
       }
       hTPCsignalAll->Fill(track.tpcInnerParam() * track.sign(), track.tpcSignal());
       const float pt = track.pt() * 2.0f;
-      if (pt < cfgHe3.ptMin || pt > cfgHe3.ptMax) {
-        continue; // Skip tracks outside pT range
-      }
       float expTPCSignal = o2::tpc::BetheBlochAleph(track.tpcInnerParam() * 2.0f / constants::physics::MassHelium3, mBBparamsHe[0], mBBparamsHe[1], mBBparamsHe[2], mBBparamsHe[3], mBBparamsHe[4]);
       double nSigmaTPC = (track.tpcSignal() - expTPCSignal) / (expTPCSignal * mBBparamsHe[5]);
       hTPCnSigmaAll->Fill(track.tpcInnerParam() * track.sign(), nSigmaTPC);
-      if (std::abs(nSigmaTPC) > cfgHe3.nSigmaTPCMax) {
-        continue; // Skip tracks with TPC nSigma outside range
+      if (pt < cfgHe3.ptMin || pt > cfgHe3.ptMax || std::abs(track.eta()) > cfgHe3.etaMax || track.tpcInnerParam() < cfgHe3.minTPCrigidity || std::abs(nSigmaTPC) > cfgHe3.nSigmaTPCMax) {
+        continue; // Skip tracks outside He3 PID+kinematics selection criteria
       }
       setTrackParCov(track, trackParCov);
       std::array<float, 2> dcaInfo;