Phi distribution redone, this time separating embedded tracks from ones from the simulated events.

Update 4/23/09:

The pT cut was wrong. Instead of taking pT > 6GeV for the high pT phi distribution, I took pT < 6. That might explain the lack of TPC sector boundary structures in the phi distribution.

Plot with corrected pT cut added.

The TPC sector boundaries are more visible in the embedded track phi distribution. This was as expected, as we assumed the embedded tracks have more high pT tracks that would have lower tracking efficiency at the TPC sector boundaries. However, when the phi distribution is plotted for lower (2<pT<3) and higher (>6) pT tracks (combined event and embedded), we don't see the sector boundaries in the higher pT phi distribution.

So was the assumption (that embedded tracks have higher pT than simulated event tracks) correct?

Update 4/23/09: We see that the phi distribution of lower (pT < 2) and higher (pT > 6) pT tracks (combined event and embedded) support our first assumption that the higher pT tracks have lower efficiency at TPC sector boundaries.

Previous plot with wrong pT cut:

Comparison with real data