### April 8th

#### Questions...

• when looking at pt, px ditributions, to plot them on the same histo, what should be (if any) be the scale factor ?
If we had 2 exact same phenomena, following a gaussian law, but with different number of events, they would look "different", only because of stat (since sigma ~sqrt(N). So, 1st guess, need to normalize to the same # of entries. However, MET/x is a random walk...with non constant step...so ? (maybe ill-phrased but if I'd be able to phrase it properly, I'd have the solution :s)

### April 4th

sample : QCD_Pt_15to3000_TuneZ2_Flat_7TeV_pythia6_Spring11-PU_S1_START311_V1G1-v1 (flat to 10 PU, in-time only).

#### Vertices

* vertices distributions :

DA : deterministic annealing. Should be the default as of 420_pre7.

Vertices versus number of pile-up interactions : "old" reco vertices, good (= isFake && ndof > 4 && abs(z) <= 24 && position.Rho <= 2) old reco vertices, reco vertices with DA, good reco vertices with DA)

....MC : plots wrt PU vertices (at least for now). looks like a cut on the number of pile-up vertices ??

#### MET distributions

....to be attached later.

#### MET vs PU

* sigma(MET,x) vs PU for different METs:

hmm...I screwed up...:(

### March 28

Code (update April 4th) :

```   cvs co -r V00-01-04  CommonTools/ParticleFlow
rm CommonTools/ParticleFlow/python/pfTaus_cff.py
emacs -nw CommonTools/ParticleFlow/python/PF2PAT_cff.py
cvs co RecoJets/JetAnalyzers
cvs co -r V01-04-04 RecoVertex/PrimaryVertexProducer
cvs co -d METsWithPU/METsAnalyzer/ UserCode/lucieg/METsWithPU/METsAnalyzer/
```

• 1) need head so that pfNoPileUp doesn't crash on assert() when 2 vtces found for the same track & ...
• 2) doesn't compile (relevant though ?)
• 3) comment out tau parts
• 4) PFJetsSelector (should check a tag to get rather than head...)
• 5) offline primary vertices with deterministic annealing

### March 27

• new QCD samples QCD_Pt_15to3000_TuneZ2_Flat_7TeV_pythia6_Spring11-PU_S1_START311_V1G1-v1 (in-time only PU ? to be checked)
• !!! 3_11_1 : keep PileupSummaryInfo_*_*_*, now, with 3_11_3 : keep PileupSummaryInfos_*_*_*

• nr of reco vertices with deterministic annealing (...) vs nr of pile-up interactions, nr of "old-fashioned" reco vertices vs nr of pile-up interactions, nr of pixel vertices (out of curiosity) vs nr of pile-up interactions

• still need to check on FastSim (but weird distrib with 3_11_1...),...

### March 21

Trying to move to offline primary vertices with deterministic annealing (...)

* n reco vtces with DA vs # PU, QCD (! OOT PU info not there ):

### March 16

#### FastSim QCD Pt 15-500, COM 7TeV, Startup Conditions 10k events/PU, for = 0, 5, 10, 15, 20 (25)

##### # reco vertices vs # PU vertices

* # of reco vertices vs # PU vertices, FastSim:

##### Pt distribution, for different #PU vertices

• standard pf met and pfmet with no pile up pf candidates only:

##### Pt,x distribution, for different #PU vertices

• standard pf met and pfmet with no pile up pf candidates only

##### sigma(Pt,x distribution), standard PFMET, as a function of #PU vertices

• sigma(pt, x) pfmet & pfmet npu:

#### /QCD_Pt_15to3000_TuneZ2_Flat_7TeV_pythia6/Spring11-E7TeV_FlatDist10_2011EarlyData_50ns_START311_V1G1-v1/GEN-SIM-RECODEBUG

##### # reco vertices vs #PU vertices
* #PU vertices distribution and # reco PV vs # PU vertices :

##### Pt distribution, for different #PU vertices

* standard pf met, pf met with no pile up pf candidates only:

##### Pt,x distribution, standard PFMET, for different #PU vertices
* standard pf met, pf met with no pile up pf candidates only:

##### sigma(Pt,x distribution), standard PFMET, as a function of #PU vertices
* sigma(pt, x) pfmet & pfmet npu:

#### TO DO LIST :

• add type I corrections (ok for std PFMET, not yet for NPU)
• ...

-- LucieGAUTHIER - 16-Mar-2011

Topic attachments
I Attachment History Action Size Date Who Comment
png DAvsPU.png r1 manage 12.3 K 2011-03-27 - 21:03 LucieGAUTHIER
png PixelvsPU.png r1 manage 12.0 K 2011-03-27 - 21:06 LucieGAUTHIER
png nGoodRecoVtcesDAVsnPUverticesAp4.png r1 manage 12.5 K 2011-04-04 - 17:14 LucieGAUTHIER n good reco vtces with DA vs # PU
png nGoodRecoVtcesVsnPUverticesAp4.png r1 manage 12.5 K 2011-04-04 - 17:14 LucieGAUTHIER n good reco vtces vs # PU
png nPUvertices.png r1 manage 6.9 K 2011-03-16 - 03:14 LucieGAUTHIER #PU vertices distribution
png nPUverticesOld.png r2 r1 manage 12.9 K 2011-04-04 - 17:10 LucieGAUTHIER nr of vertices ("old" offline +PU)
png nPUverticesPVDA.png r1 manage 12.5 K 2011-04-04 - 16:21 LucieGAUTHIER nr of vertices ( offline with DA +PU)
png nRecoVtceDAsVsnPUverticesAp4.png r1 manage 12.3 K 2011-04-04 - 16:29 LucieGAUTHIER n good reco vtces with DA vs # PU
png nRecoVtcesDAVsnPUvertices.png r1 manage 9.2 K 2011-03-21 - 15:31 LucieGAUTHIER n reco vtces with DA vs # PU, QCD
png nRecoVtcesVsnPUvertices.png r1 manage 10.8 K 2011-03-16 - 03:15 LucieGAUTHIER # reco PV vs # PU vertices
png nRecoVtcesVsnPUverticesAp4.png r1 manage 11.9 K 2011-04-04 - 16:30 LucieGAUTHIER n good reco vtces vs # PU
png nrOfRecoVtcesVsPUVtces.png r1 manage 12.5 K 2011-03-16 - 02:54 LucieGAUTHIER # of reco vertices vs # PU vertices, FastSim
png ptDistribMet1.png r3 r2 r1 manage 13.6 K 2011-03-16 - 03:21 LucieGAUTHIER pt distribution, standard pf met
png ptDistribMet1QCD.png r1 manage 13.1 K 2011-03-16 - 03:24 LucieGAUTHIER pt distribution, standard pf met
png ptDistribMet2.png r3 r2 r1 manage 14.9 K 2011-03-16 - 03:22 LucieGAUTHIER pt distribution, pf met with no pile up pf candidates only
png ptDistribMet2QCD.png r1 manage 14.4 K 2011-03-16 - 03:24 LucieGAUTHIER pt distribution, pf met with no pile up pf candidates only
png ptxDistribMet1.png r3 r2 r1 manage 12.7 K 2011-03-16 - 03:22 LucieGAUTHIER pt, x distribution, standard pf met
png ptxDistribMet1QCD.png r1 manage 12.9 K 2011-03-16 - 03:25 LucieGAUTHIER pt, x distribution, standard pf met
png ptxDistribMet2.png r3 r2 r1 manage 13.8 K 2011-03-16 - 03:23 LucieGAUTHIER
png ptxDistribMet2QCD.png r1 manage 13.9 K 2011-03-16 - 03:26 LucieGAUTHIER pt, x distribution, pf met with no pile up pf candidates only
png sigmaPtxVsPU.png r1 manage 7.6 K 2011-03-16 - 03:06 LucieGAUTHIER sigma(pt, x) pfmet & pfmet npu
png sigmaPtxVsPUQCD.png r1 manage 7.6 K 2011-03-16 - 03:26 LucieGAUTHIER sigma(pt, x) pfmet & pfmet npu
png sigmaVsPU.png r1 manage 17.8 K 2011-04-04 - 17:05 LucieGAUTHIER sigma(MET,x) vs PU for different METs
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Topic revision: r11 - 2011-04-14 - LucieGAUTHIER

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