Reproduction of pp 62.4 GeV Run 6

Updated on Tue, 2012-01-24 08:38. Originally created by gmagela on 2012-01-17 17:17.

I looked at test sample of pp 62 GeV run 6 that was reproduced using new library SL11d. Some QA plots and a comparison between new (P11id) and old production (P06ie) were done and plots are shown here. By now, my focus will be primary vertex and multiplicity.

Information

Old Production: P06ie (full production)

Total of events (in MuDst files): 22,628,776
Events with trigger Id = 147001 (Minimum bias (MB) events): 7,836,580 (~34.6 % of total events)
Events with PV found: 2,155,902 (~27.5 % of MB events)
Events with only 1 PV: 2,145,654 (~27 % of MB events)

New Production: P11id (test sample)

Total of events (in MuDst files): 7,166,107
Events with trigger Id = 147001 (Minimum bias (MB) events): 1,953,787 (~27.3 % of total events)
Events with PV found: 1,842,167 (~94.3 % of MB events)
Events with only 1 PV: 236,503 (~12.1 % of MB events)

For all plots showed here, I used the same run number to compare both production, and the primary vertex used is the standard PV returned by StMuDst::primaryVertex(), that is the PV with highest ranking among those PV found in such event.

Primary Vertex

Number of Primary Vertex

All PV (Linear scale)	All PV (Log scale)	Ranking>0	Ranking<0

Ranking

	P11id	P06ie
All
Ranking>0
Ranking<0		For old production, ranking less than zero is only -9999 that was a flag I put for those events with no PV found.

In the first plot (upper left panel - ranking for all in P11id), we see 3 different ranges:

Close to 1000 x 10³: standard return from StMuPrimaryVertex::Ranking();
Close to 0: scale used was bad to visualize, but all this entries are -9999, that was a flag that I put in my code when no PV was found.
Close to 1000x10³: standard return from StMuPrimaryVertex::Ranking()