message: add rejection of clusters if they increase chi2 too much, should be fine-tuned later
diff: @@ -300,6 +300,8 @@ GPUd() int AliHLTTPCGMTrackParam::UpdateTrack(float* PolinomialFieldBz,float pos
  float z1 = posZ - fP[1];
  float mS2 = Reciprocal(err2Z + c11);
  + float tmpCut = param.HighQPtForward() < fP[4] ? 5 : 5;
  + if (mS0*z0*z0 > tmpCut || mS2*z1*z1 > tmpCut) return 2;
  fChi2 += mS0*z0*z0;
  fChi2 += mS2*z1*z1;
  if (fChi2 / (N + 1) > 5) return 1;
  