message: ignoring pt2 < 0
diff: @@ -656,5 +656,7 @@ Double_t AliRsnMiniPair::pTLstar(Bool_t mc) const
  TDatabasePDG *db1 = TDatabasePDG::Instance();
  TParticlePDG *part1 = db1->GetParticle(3124);
  Double_t mLstar = part1->Mass();
  - return sqrt(fSum[ID(mc)].Pt()*fSum[ID(mc)].Pt() + fSum[ID(mc)].M()*fSum[ID(mc)].M() - mLstar*mLstar);
  + Double_t pt2 = fSum[ID(mc)].Pt()*fSum[ID(mc)].Pt() + fSum[ID(mc)].M()*fSum[ID(mc)].M() - mLstar*mLstar ;
  + if(pt2 < 0.0) return 1E20;
  + return TMath::Sqrt(pt2);
  }
  