message: corrected Xi mass calculation
diff: @@ -1806,7 +1806,7 @@ float AliAnalysisTaskPOmegaPenne::CalculateInvMassXi(TVector3 momBach, int PGGba
  TVector3 PtotV0 = (momPosDaughter + momNegDaughter);
  float Ev0 = TMath::Sqrt(massV0 * massV0 + PtotV0.Mag2());
  - float EBach = TMath::Sqrt(massBach + momBach.Mag2());
  + float EBach = TMath::Sqrt(TMath::Power(massBach, 2) + momBach.Mag2());
  // float Ptot2Casc = (PtotV0 + momBach).Mag2(); // alt und vllt falsch
  float Ptot2Casc = momXi.Mag2();
  