Attivita’ di software+analisi fisica

a Padova

U. Gasparini, Padova, 4/9/06

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Agenda

-  CSA06 (Computing -Software-Analysis challenge 2006: previsto in autunno) : prototipi da sviluppare, nostro coinvolgimento

- analisi dati magnet test (possibili analisi comuni Tracker/mu sui dati dalla DAQ globale?)

- Organizzazione ambiente di lavoro comune: risorse hardware & software

- analisi di 'prima fisica' a LHC

- preparazione per LHC startup workshop (prossima CMS week)

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CSA06: scopo/definizione

D.Acosta, CSA meeting 2/8/06

E’ il primo test globale di ricostruzione/analisi nel frameworkfinale (sia sw che infrastruttura di computing) di CMS (“LHC-like”):

vedi dopo

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CSA06

More info (status, data handling/ organization, varioustechnical details, meetings agenda/presentations…):

Twiki page:

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CSA06: overall “expressions of interests”

D.Acosta 23/8

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CSA06: data samples

Minimum bias (25M events, 081) t-tbar (5M events, all decay channels, 082) Z->mu+mu- (2M events, 082) W->e nu (4M events, 082) events selected in narrow range to illuminate 2 SMs Electroweak soup (5M events, 082) 2.6M W->l nu (xsec reduced 1/5) + 2.2M Drell-Yan (mass>15 GeV) + 0.1M H->WW (xsec increased 40X), all 3 charged lepton generations Soft Muon Soup (2M events, 082) 1M events inclusive muons in minbias + 1M events J/Psi production, with Pt_mu>4 preselection Jet calibration soup (~1M events, 082) dijet + Z+jet, various pt-hat ranges with weights to give JetMET event yield HLT soup (5M++ events, 082), W (charged leptons) + Drell-Yan (mass>20 GeV, charged leptons) + t-tbar (all modes) + dijets (pt-hat>350 GeV)

Pre-challenge phase well advanced: preparation of datasamples(up to “digis”) almost finalized

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Muon Analyses for CSA06

Proposals for PRS/mu contributions to CSA06:

1) Alignment study with prompt muons from W and Z decays

2) Extraction of W signal out of single-lepton datastream

3) Di-muon analysis, Z reconstruction and muon efficiency measurement from data

4) Extraction of J/signal and momentum calibration=> optional

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1. Alignment

PTDR:Estimator from StandAlone muon fit (in ORCA;chambers randomly mis-alignedby 1 mm)

~2 fb-1

chambersaligned

cambersmisalignedBy 1 mmCSA06: reproduce this result

In CMSSW, starting from a“HLT high pT lepton-stream” of ~ 5 M ev.(including 10-20 % of W

Datasamples; - 1 M Z 2 - 1 M W

Madrid, Santander

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2. WAnalysisExtract ~ 2000 W out of a single-lepton datastream including~ 1 Mevt of QCD pp X events

Scope: - test HLT trigger efficiency - test isolation algorithms - show capability to isolate ‘standard candle’ with good purity (=> lumi measurement) - needed for alignment - may be used for jet calibration?

Datasamples: - 1M pp X preselected (MSEL=1, pthat=20, pTmu> 5) - 10 kevt W signal

W

Lint~12 nb-1

Generator level

Padova

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3. Di-Muon Analysis

Scope: - test Z reconstruction with 1 and 2 identified muons - test procedures to measure efficiencies from data - high pT momentum calibration, mag.field effects

Sample/code: - 1 M Z 2 - 1 M W (background)

additional backg. from tt single semileptonic

Extract Z signal from 1+2mu ‘high pT lepton’ datastream

Florida,Purdue,FNAL,Madrid

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4. J/psi Calibration

- Extract ~2000 J/signal out of 1 Mev pp 1+X

- Perform detailed study of momentum calibration on a dedicated ~ 106 evt J/Psi sample

Scope: - understand/train of low pT triggers - muon identification in jet environment - momentum calibration, mag.field effects

Sample/code: - 1 M J/psi

pTmu1> 4. GeVpTmu2> 1. GeV

~200 J/ / (10 nb-1)

(BUT 2nd is NOT identified in ~50% of the cases)

Spain, China groups interested

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PRS/mu CSA06 tasksProposed CSA06 tasks/analyses: 1)Task: Muon Alignment samples: Z 2mu

Location: T1-PIC, Tier2-Spain (CIEMAT-IFCA) Contact: F. Matorras (Spanish group)

2) Task: W -> mu nu analysis Samples: Electroweak + soft muon ‘soups’

Location: T1-CNAF, Tier-2 Legnaro, Padova Contact: U.Gasparini, E.Torassa

3) Task: Di-muon analysis, Z reconstruction samples: Z 2mu (+ electroweak soups for backg.?)

Location: Purdue, FNAL, PIC Contact: M. Schmitt, N. Neumeister, J.Alcaraz

4) Task: J/Psi -> mu mu analysis samples: soft muon ‘soups’

Location: T1-PIC ,T2-Spain(CIEMAT-IFCA) ,China?Contact: J.Alcaraz(Spain), S.Qian [TBC]

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CSA06: Time schedule (I)

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CSA06 time schedule (II)

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CSA06 time schedule (III)

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MTCC analyses

MTCC ‘phase 1’ (basically hardware/online,offline software integration test) completed:

~ 15 M trigger (7 TB data) taken(“local” and “global” runs, many different trigger conditions, B = 0 and “B on” data(up to 3.8 T))

A lot of detector specific work on-going…

(see e.g. “DT/CSC cosmics analysis” meetings on:

http: //indico.cern.ch/categoryDisplay.py?categId=20 )

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MTCC data

Global DAQ Run 2600,B=3.8 T

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MTCC data

Run 2485 B=0

DT occupancies

W+1 W+2

MB1

MB2

MB3

MB4

sect10sect10 sect11

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MTCC data

Run 2485 B=0

MBn

MBn+1

1

2

W+1 W+2

12

23

34

sect10 sect11 sect11

(rad)

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MTCC data

Run 2485 B=0

x(cm)

MBn

MBn+1x1extr x2

x

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MTCC data

Run 2485 B=0

(rad)

(rad)

(rad)

(rad)

x23(cm)

x23(cm)x12(cm)

x34(cm)

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MTCC data

Run 2600B= 3.8 T

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MTCC data

Run 2600B = 3.8 T

Pt estimation

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MTCC analyses

- Can we developed cross-detectors analyses (e.g. barrel DT + Tracker) ?

- Preparing for MTCC “phase 2” (the true challenge: foreseen runs at 4 T under stable conditions..)

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Organizzazione :

Risorse comuni:

Cluster con sistema SCL3: 3 macchine: lxcmssrv1,2,3- /home condivise- software cms (/cms/sw) condiviso;- scramv1, CMSSW_0_9_1 installato (=>generazione,simulazione,ricostruzione, visualizzazione (iguana))-dati condivisi: /cms2/data /cms5/data /cms6/data ( ~ 1.2 TB mass storage) [e.g. see: /cms2/data/SectTest_0607/Global/*.root files; CMSSW configuration files on : /cms2/data/Sect Test_0607/ana/Aug06/*.cfg ]