Lambda/K0 ratio in two particle correlation space
Reference
Speaker : Jiaxu / Jana / (Rene - not available)
Talk time : 00:20, Duration : 00:10
Discussion on Lambda/K0s ratio reported in Jiaxu (near- and away-side) and Jana's (ridge and jet) analysis. Prompted by Rene's message:
Energy and system size dependence of phi meson production
Updated on Mon, 2007-07-30 06:31. Originally created by lbarnby on 2007-07-30 06:25.Reference
Speaker : Bedanga Mohanty ( LBNL )
Talk time : 00:00, Duration : 00:20
http://www.star.bnl.gov/protected/spectra/bedanga/Phi/paper/phi_paper.html
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Strangeness Phone Meeting
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Strangeness Phone Meeting
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| Time | Talk | Presenter |
|---|---|---|
| 00:00 | QM Abstract finalisation ( 00:15 ) 0 files | All |
| 00:15 | Xi in Cu+Cu ( 00:15 ) 0 files | Jun/Xiaobin |
| 00:30 | Scaling variables for Cu / Au comparisons ( 00:15 ) 0 files | Anthony |
| 00:45 | Ridge in 62 GeV Au ( 00:08 ) 0 files | Christine |
| 00:53 | First Look 62 GeV Cu V0 ( 00:07 ) 0 files | Pan Pan |
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| Time | Talk | Presenter |
|---|---|---|
| 00:00 | First Look 62 GeV Cu V0 ( 00:10 ) 0 files | Pan Pan (Yale) |
| 00:10 | Ridge in 62 GeV Au ( 00:15 ) 0 files | Christine (Yale) |
| 00:25 | 20 GeV New production QA ( 00:10 ) 0 files | Helen (not available) (Yale) |
| 00:35 | QM Poster Abstracts - Last Chance ( 00:05 ) 0 files | Lee, Dhevan |
| 00:40 | Embedding requests and priority ( 00:05 ) 0 files | Lee |
| 00:45 | Action items from last week ( 00:10 ) 0 files | All |
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| Time | Talk | Presenter |
|---|---|---|
| 00:00 | Energy and system size dependence of phi meson production ( 00:20 ) 0 files | Bedanga Mohanty (LBNL) |
| 00:20 | Lambda/K0 ratio in two particle correlation space ( 00:10 ) 0 files | Jiaxu / Jana / (Rene - not available) |
| 00:30 | Discussion on future analysis / DAQ 1000 ( 00:15 ) 0 files | All |
| 00:45 | Discussion on requirements for QM2008 analysis ( 00:15 ) 0 files | All |
Strangeness Phone Meeting
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| Time | Talk | Presenter |
|---|---|---|
| 00:00 | Omega Year 4 Au+Au Update ( 00:20 ) 1 file | Dhevan Gangadharan (UCLA) |
| 00:20 | Fits to AuAu62 v2 ( 00:10 ) 0 files | Christine Nattrass (Yale) |
| 00:30 | Update on Omega in Cu+Cu 200 GeV ( 00:29 ) 1 file | Xiaobin Wang (Tsinghua) |
| 00:59 | Embedding Report ( 00:00 ) 0 files | Lee Barnby |
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| Time | Talk | Presenter |
|---|---|---|
| 00:00 | Future Analyses / DAQ 1000 discussion ( 00:45 ) 2 files | Lee, All |
| 00:45 | 20 GeV Analysis ( 00:07 ) 0 files | Matt Smith (Yale) |
| 00:52 | Au+Au 62 GeV Kaon Analysis ( 00:08 ) 0 files | Jun (UNICAMP) |
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Some Luminosity Statistics
Updated on Wed, 2007-08-01 15:45. Originally created by kocolosk on 2007-07-29 22:23.===========================================================================================
trigId L_int_mb ε_vtx ε_mb vz vz_mb L_samp_mb < ps > L_sampled
-------------------------------------------------------------------------------------------
117001 4.794 pb^-1 0.505 0.505 0.678 0.678 6.191 μb^-1 1.0 6.191 μb^-1
137221 111.932 nb^-1 0.876 0.475 0.622 0.679 360.330 mb^-1 24894.4 8.970 nb^-1
137222 4.682 pb^-1 0.936 0.507 0.616 0.678 5.830 μb^-1 35544.9 207.237 nb^-1
137611 3.606 pb^-1 0.896 0.500 0.641 0.675 2.620 μb^-1 39894.6 104.544 nb^-1
137622 4.682 pb^-1 0.977 0.507 0.637 0.678 5.830 μb^-1 24114.8 140.597 nb^-1
===========================================================================================where
- L_int_mb is the integrated luminosity seen by the minbias trigger for runs in which the specified trigger was active
- eps_vtx is the vertex finding efficiency for this trigger
- eps_mb is the vertex finding efficiency for mb-triggered events in runs in which the specified trigger was active
- vz is the fraction of events with a reco vertex that had fabs(vz) < 60 cm
- vz_mb is the same quantity for mb triggered events
- L_samp_mb is N_good_vertex_mb / (eps_mb * sigmaBBC))
- < ps > is sum_{runs} (ps_mb * n_mb) / sum_{runs} (ps_trig * n_trig)
- L_sampled is L_samp_mb * < ps >
Data were obtained from the 289 spinTree runs without any additional QA selection. If I restrict to the 188 runs in the latest jet runlist I get
===========================================================================================
trigId L_int_mb ε_vtx ε_mb vz vz_mb L_samp_mb < ps > L_sampled
-------------------------------------------------------------------------------------------
117001 003.286 pb^-1 0.513 0.513 0.676 0.676 4.757 μb^-1 1.0 4.757 μb^-1
137221 065.594 nb^-1 0.957 0.518 0.625 0.683 208.913 mb^-1 24838.9 5.189 nb^-1
137222 003.220 pb^-1 0.942 0.512 0.613 0.676 4.548 μb^-1 36362.2 165.371 nb^-1
137611 002.253 pb^-1 0.905 0.510 0.636 0.669 1.649 μb^-1 40234.9 066.358 nb^-1
137622 003.220 pb^-1 0.981 0.512 0.637 0.676 4.548 μb^-1 24376.0 110.859 nb^-1
===========================================================================================The vertex finding efficiency for minbias triggers climbs a little bit, but it's still only 51%. After doing a little digging it seems this is consistent with Jan's findings in his evaluation of PPV for 2006:
http://www.star.bnl.gov/HyperNews-star/protected/get/starspin/2820.html