message: Check what happens when rejecting material photons
diff: @@ -343,6 +343,8 @@ void AliSigma0PhotonCuts::PhotonCuts(
  photon.SetID(mcPartPos->GetMother());
  if (mcParticle) {
  + if (mcParticle->IsSecondaryFromMaterial()) continue;
  +
  photon.SetMCParticle(mcParticle, mcEvent);
  photon.SetMCPDGCode(mcParticle->GetPdgCode());
  photon.SetMotherID(mcParticle->GetMother()); // otherwise the Sigma0 is not set properly as the mother of the photon
  