message: Use TPC inner momentum to compute phi*
diff: @@ -173,7 +173,7 @@ float AliSigma0ParticleBase::ComputePhiStar(const AliESDtrack *track,
  const float magneticField,
  const float radius) const {
  const float phi0 = track->Phi(); // angle at primary vertex
  - const float pt = track->Pt();
  + const float pt = track->GetTPCInnerParam()->Pt();
  const float charge = track->Charge();
  // To use the following equation:
  