class AliPhiMesonHelperTrack: public TObject

template <typename T> Double_t AliAnalysisTaskPhiFlow::DeltaDipAngle(const T* track1, const T* track2) const
{
   // Calculate the delta dip angle between two particles
   if(fDebug > 1) cout << " *** DeltaDipAngle() *** " << endl;
   if (track1->P()*track2->P() == 0) return 999;
   return TMath::ACos(((track1->Pt() * track2->Pt()) + (track1->Pz() * track2->Pz())) / (track1->P() * track2->P()));
}

template <typename T> Bool_t AliAnalysisTaskPhiFlow::CheckDeltaDipAngle(const T* track1, const T* track2) const
{
   // Check if pair passes delta dip angle cut within 0 < p_t < fDeltaDipPt
   if(fDebug > 1) cout << " *** CheckDeltaDipAngle() *** " << endl;
   if ((TMath::Abs(DeltaDipAngle(track1, track2)) < fDeltaDipAngle) && (PhiPt(track1, track2) < fDeltaDipPt)) return kFALSE;
   return kTRUE;
}