1 High PT Status of data workflow and first analyses plans for October exercise K. Kousouris...

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High PT

Status of data workflow and first analyses plans for October exercise

K. Kousouris (Fermilab)K. Rabbertz (University of Karlsruhe)

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Outline

QCD, 01 September 2009

✦ QCD High pT Jets: data workflow- Primary data-sets (PD)- Secondary data-sets (SD)- Group AOD skims- T2 space requirements

✦ Early papers: a prelude to the first publications

- status of the drafts- manpower- requirements & needs

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Data workflow: the concept


JetMonitor - HLT_L1Jet6U- HLT_Jet15U- HLT_DiJetAve15

Jets - HLT_Jet30U- HLT_Jet50U- HLT_QuadJet15U- HLT_FwdJet20U- HLT_DiJetAve30

PDs (RECO)Data Ops, T1

SDs (RECO)Data Ops, T2

AODsGroup, T2

SD_L1Jet6U- HLT_L1Jet6U

SD_Jet15U- HLT_Jet15U

SD_Jet30U_Quad_Fwd- HLT_Jet30U- HLT_QuadJet15U- HLT_FwdJet20U

SD_Jet50U- HLT_Jet50U

AOD_L1Jet6U

AOD_Jet15U

AOD_Jet30U

AOD_Jet50U

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Data workflow: remarks


✦ Primary data-sets- collections of trigger bits- RECO format- Transferred from T0 to T1s- Data Ops responsibility

✦ Secondary data-sets- Produced by ONLY ONE primary data-set- Each PD is split into 3 SDs at the T1s- RECO format (NO event content reduction)- Transferred to T2s- Data Ops responsibility

✦ Group AODs- Based on SDs: one AOD per single jet trigger bit- Event content reduction (and trigger filtering if needed)- Stored in T2s- Group’s responsibility

✦ Analyses PATuples- NO central PATuple production by the group- Each analysis is encouraged to produce a PATuple instead of private ROOTuples

High PT

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Group AODs: details


✦ The Group’s AOD Event size is estimated to be less than 50 kBytes.✦ For 10pb-1 of integrated luminosity we estimate to need a few TBs of storing space for all AODs.✦ We would like to have our AODs stored in one European T2 site (T2_DE_DESY) and one US T2 site (T2_US_MIT or T2_US_Caltech). The dedicated QCD space at each of these sites is 30 TB which can easily accommodate our AODs.✦ The required configuration files for the AOD production have been created and tested successfully.✦ Currently the responsible persons are Klaus and Kostas. Volunteers needed !!!

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Group AOD content✓ Jet collections✓ CaloTower collection✓ JetTrackAssociator✓ MET collections✓ Trigger results✓ EventAuxilary✓ Vertex information

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Early data analyses: needs

✦ Stability of the detector conditions

✦ “Good Run” list and access to the lumi sections

✦ Smooth data flow to our dedicated T2s

✦ CRAB reliability

✦ Jet Energy Scale

✦ Co-ordination and alignment between the analyses in order to avoid duplicate work in understanding the trigger behaviour, the jet ID and the event cleanup.

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IMPORTANT: before we can start the High PT jets analyses, some requirements must be

fulfilled !!


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Goals for October exercise


Test the full data workflow chain from the T0 to the T2s. (we need to identify the group’s “data manager” !!!)

Make a more precise estimate of our AODs size.

Test the co-ordination between 2 or more analyses for common issues (e.g. single jet trigger efficiency measurement).

Benchmark analysis: dijet mass cross-section or inclusive jet cross-section measurement (depending on the available manpower).

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Early papers summary

1) QCD-08-003: “Hadronic Event Shapes at CMS” M. Weber, G. Dissertori, F. Moortgat2) QCD-09-003: “Dijet Azimuthal Decorrelations in pp Collisions at 10 TeV” C. Dragoiu, L. Apanasevich, N. Varelas3) QCD-09-004: “Measurement of the Dijet Production Ratio in pp Collisions at 10 TeV” D. Miner, A. Harel, R. Harris, R. Demina, M. Zielinski4) QCD-09-005: “Measurement of the Dijet Mass Cross Section in pp Collisions at 10 TeV” K. Kousouris, R. Harris5) QCD-09-006: “Measurement of the Dijet Mass Distribution and Search for New Particles in pp Collisions at 10 TeV” R. Harris, C. Jeong, K. Kousouris, S.W. Lee, S. Ozturk

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IMPORTANT: ALL analyses will start with first data regardless of the early papers

exercise !!!QCD, 01 September 2009

All 5 early papers from the High PT group are ready. Congratulations to the authors.

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Early papers: QCD-08-003 High PT


Central transverse thrust measurement: understanding the QCD dynamics and MC tuning.

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Dijet azimuthal decorrelation measurement: understanding the QCD dynamics and MC tuning.

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Dijet ratio vs mass: looking at the dijet angular production

ratio for deviations from QCD predictions.

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Measurement of the differential dijet production cross-section vs mass: confronting the pQCD prediction.

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Search for new particles in the dijet mass spectrum.

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Summary

✦ The High PT jets QCD subgroup will create AODs based on single jet trigger bits with reduced Event content. The software is already available.

✦ We wish to have our AODs stored in one European and one US T2 site.

✦ Each analysis will create a separate PATuple/ROOTuple from the common AODs.

✦ We have set specific goals for the October exercise. A few details still need to be taken care of.

✦ All of the early papers (5 in total) are ready and uploaded to CADI.

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