The PPV with BTOF included is tested with Run 12 real data(pp200, low luminosity fill).

The data file using in this test is (total events 19191)

st_physics_13065041_raw_3010001.daq

Production chain optoins(http://www.star.bnl.gov/devcgi/dbProdOptionRetrv.pl) are

pp2012a,mtdDat,btof,fmsDat,VFPPVnoCTB,beamline,BEmcChkStat,Corr4,OSpaceZ2,OGridLeak3D,-hitfilt

Note: Good vertex means vertex with postive ranking.

Production was done using the DEV lib on 3/11/2012. Here shows the results: (TOF2*BBCMB trigger is selected, 18853 events in total)

PPV efficiency is defined as (events with at least one good vertex) / (total number of events).

efficiency=98.29%(wTOF), 94.75%(woTOF)

Fig:1 The 2-D correlation plot of # of good vertices in each event for PPV w/ TOF and w/o TOF.

Fig. 2: The ranking distributions for all vertices from PPV w/ and w/o TOF

Fig. 3: Vz correlation for the good vertex (ranking>0) with the highest ranking in each event for PPV w/ and w/o.

Fig. 4: Vz difference between vertices found in PPV w/ TOF and w/o TOF for the first good vertex in each event if any.

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Update: select VPDMB-nobsmd triggered events

The data file using in this test is, (due to time limit, only run first 8757 events in this file)

st_physics_13050038_raw_1010001.daq

same chain options,

Production was done using the DEV lib on 3/14/2012. Here shows the results: (VPDMB-nobsmd trigger is selected, 5627 events in total)

PPV efficiency is defined as (events with at least one good vertex) / (total number of events).

efficiency=62.73%(wTOF), 47.66%(woTOF)

Fig:1 The 2-D correlation plot of # of good vertices in each event for PPV w/ TOF and w/o TOF.

Fig. 2: The ranking distributions for all vertices from PPV w/ and w/o TOF

Fig. 3: Vz correlation for the good vertex (ranking>0) with the highest ranking in each event for PPV w/ and w/o.

Fig. 4: Vz difference between vertices found in PPV w/ TOF and w/o TOF for the first good vertex in each event if any.

Fig. 5: The first good vefrtex Vz and VpdVz difference in w/ and w/o TOF scenarios.

Fig.6: The first good vefrtex Vz and VpdVz 2D correlation for PPV w/ TOF

Fig.7: The first good vefrtex Vz and VpdVz 2D correlation for PPV w/o TOF