Basic counts
4 fills
Luminosity estimated assuming a T0VX cross-section of 39 mb
| fill number | filling scheme | <mu> | lumi trigger | estimated ALICE lumi (nb^-1) | CMUL-B-NOPF-MUON lumi (nb^-1) | eff (%) |
|---|---|---|---|---|---|---|
| 3962 | 50ns_50b_38_31_36_6bpi10inj_wp | 0.15 | C0TVX-B-NOPF-CENTNOTRD | 16.87 | 12.73 | 75 |
| 3965 | 50ns_152b_110_36_108_36bpi7inj_wp | 0.28 | C0TVX-B-NOPF-CENTNOTRD | 4.24 | 3.53 | 83 |
| 3971 | 50ns_152b_110_36_108_36bpi7inj | 0.29 | C0TVX-B-NOPF-CENTNOTRD | 2.51 | 2.05 | 82 |
| 3976 | 50ns_152b_110_36_108_36bpi7inj | 0.26 and 0.69 | C0TVX-B-NOPF-CENTNOTRD and C0TVX-B-NOPF-MUON | 17.4 and 28.3 | 36.5 | 80 |
Total CMUL7 lumi 54.8 nb^-1
MB trigger is CINT7-B-NOPF-CENTNOTRD or CINT7-B-NOPF-MUON.
Note that run 229417 (fill 3976) miss the GRP/CTP/Config file, hence cannot be reconstructed.
17 runs
Coverage
trigger count coverage shows an issue : the number of analyzed event is above the expected counts from the logbook ! Not for all the runs, but for some run/trigger the delta is huge (e.g. 743% for CINT7 in run 228979)
root [0] AliAnalysisMuMu m("ds.txt.saf.root")
root [1] m.TriggerCountCoverage("CMUL7-B-NOPF-MUON CINT7-B-NOPF-CENTNOTRD",true,true)
9601284 RUN 000228943 CINT7-B-NOPF-CENTNOTRD 9601284 expected 8512813 [!] fraction 112.8 % CMUL7-B-NOPF-MUON 53309 expected 53617 [ ] fraction 99.4 % percentage of total = 29.30 % 1
6859017 RUN 000228978 CINT7-B-NOPF-CENTNOTRD 6859017 expected 795758 [!] fraction 861.9 % CMUL7-B-NOPF-MUON 32346 expected 18304 [!] fraction 176.7 % percentage of total = 50.23 % 2
3895434 RUN 000228939 CINT7-B-NOPF-CENTNOTRD 3895434 expected 3899826 [ ] fraction 99.9 % CMUL7-B-NOPF-MUON 29025 expected 29070 [ ] fraction 99.8 % percentage of total = 62.11 % 3
3786698 RUN 000229409 CINT7-B-NOPF-CENTNOTRD 3786698 expected 581285 [!] fraction 651.4 % CMUL7-B-NOPF-MUON 98271 expected 49458 [!] fraction 198.7 % percentage of total = 73.67 % 4
2798106 RUN 000228948 CINT7-B-NOPF-CENTNOTRD 2798106 expected 2809429 [ ] fraction 99.6 % CMUL7-B-NOPF-MUON 17332 expected 17406 [ ] fraction 99.6 % percentage of total = 82.21 % 5
1230876 RUN 000228979 CINT7-B-NOPF-CENTNOTRD 1230876 expected 165652 [!] fraction 743.0 % CMUL7-B-NOPF-MUON 15842 expected 13370 [!] fraction 118.5 % percentage of total = 85.96 % 6
883553 RUN 000229355 CINT7-B-NOPF-CENTNOTRD 883553 expected 980129 [ ] fraction 90.1 % CMUL7-B-NOPF-MUON 13825 expected 15485 [ ] fraction 89.3 % percentage of total = 88.66 % 7
676159 RUN 000229360 CINT7-B-NOPF-CENTNOTRD 676159 expected 720808 [ ] fraction 93.8 % CMUL7-B-NOPF-MUON 15266 expected 16695 [ ] fraction 91.4 % percentage of total = 90.72 % 8
587948 RUN 000229101 CINT7-B-NOPF-CENTNOTRD 587948 expected 752430 [ ] fraction 78.1 % CMUL7-B-NOPF-MUON 13327 expected 17963 [ ] fraction 74.2 % percentage of total = 92.52 % 9
581677 RUN 000229376 CINT7-B-NOPF-CENTNOTRD 581677 expected 637225 [ ] fraction 91.3 % CMUL7-B-NOPF-MUON 7729 expected 8785 [ ] fraction 88.0 % percentage of total = 94.29 % 10
537364 RUN 000228936 CINT7-B-NOPF-CENTNOTRD 537364 expected 537299 [!] fraction 100.0 % CMUL7-B-NOPF-MUON 7810 expected 7810 [ ] fraction 100.0 % percentage of total = 95.93 % 11
464715 RUN 000229371 CINT7-B-NOPF-CENTNOTRD 464715 expected 469622 [ ] fraction 99.0 % CMUL7-B-NOPF-MUON 7113 expected 7390 [ ] fraction 96.3 % percentage of total = 97.35 % 12
389215 RUN 000229410 CINT7-B-NOPF-CENTNOTRD 389215 expected 433369 [ ] fraction 89.8 % CMUL7-B-NOPF-MUON 24122 expected 28031 [ ] fraction 86.1 % percentage of total = 98.54 % 13
99066 RUN 000229423 CINT7-B-NOPF-CENTNOTRD 0 expected 0 [ ] CMUL7-B-NOPF-MUON 99066 expected 106524 [ ] fraction 93.0 % percentage of total = 98.84 % 14
29864 RUN 000229398 CINT7-B-NOPF-CENTNOTRD 0 expected 0 [ ] CMUL7-B-NOPF-MUON 29864 expected 30795 [ ] fraction 97.0 % percentage of total = 98.93 % 15
15715 RUN 000229431 CINT7-B-NOPF-CENTNOTRD 0 expected 0 [ ] CMUL7-B-NOPF-MUON 15715 expected 16143 [ ] fraction 97.3 % percentage of total = 98.98 % 16
--- TOTAL 32772008 expected 21732491 fraction 150.8 %
After some multiple checks (from ESDs, from non-merged AODs, from merged AODs), the conclusion would be that the logbook (and the OCDB scalers) information is wrong or the reconstructed CTP data (i.e. the trigger mask leading to the list of fired trigger classes) is wrong ?
We assume for the moment that the problem is not in the scalers (hence the luminosity can be trusted somehow) and just move on… To be x-checked more deeply of course… Follow-up on JIRA ticket ALIROOT-6171
Rates
Invariant mass
Brute force fitting (i.e. first try), using :
func=PSIPSIPRIMECB2VWG:rebin=2:histoType=minv:alJPsi=0.984:nlJPsi=5.839:auJPsi=1.972:nuJPsi=3.444
gives :
NRUNS 16 - NTRIGGER 959924 - PT CMUL7-B-NOPF-MUON-ALL-pRABSETAPAIRY-V0A
NofJPsi 7427.739 +- 140.098 ( 1.89 %)
mJPsi 3.098 +- 0.002 (0.049 %)
sJPsi 0.076 +- 0.002 (2.136 %)
NRUNS 16 - NTRIGGER 91879134 - PT NOTRIGGERSELECTION-ALL-pRABSETAPAIRY-V0A
NofJPsi 10926.360 +- 219.390 ( 2.01 %)
mJPsi 3.097 +- 0.002 (0.055 %)
sJPsi 0.078 +- 0.002 (2.283 %)
The ratio in the number of J/ψ seems in CMUL vs all triggers (~30% loss) seems consistent with the trigger threshold of 1 GeV/c (?)
Acc x Eff
Again, first look = brute force = not tuned at all. Simulations using pp503 parametrization.
gSystem->Load("libpythia6_4_28");
AliMuonAccEffSubmitter a("GenParam");
a.ShouldOverwriteFiles(true);
a.MakeNofEventsPropToTriggerCount("CMUL7-B-NOPF-MUON");
a.SetRemoteDir("/alice/cern.ch/user/l/laphecet/Analysis/LHC15g/simjpsi/jul-10/pp503");
a.SetRunList("runlist.txt")
a.Run("test")
a.Submit(false)
Acc x Eff averaged over the analyzed runs is ~ 0.18
First guestimate of a total cross-section
sigma J/ψ = NJ/ψ / ( Acc x Eff x Lumi x BR ) = 7427 / ( 0.18 x 54.8 x 1E3 x 5.93E-2) = 12.7 µb
That would mean a doubling wrt to 7 TeV (6.38 µb )