https://twiki.cern.ch/twiki/bin/viewauth/CMS/Collisions2010Analysis

https://cmsweb.cern.ch/dbs_discovery/

ROOT Trees:

http://hepuser.ucsd.edu/twiki2/bin/view/CMSPhysics/GlobeAnalyzerRunning

DATA SD

https://twiki.cern.ch/twiki/bin/view/CMS/PhysicsSecondaryDatasets

/MinimumBias/Commissioning10-SD_EG-v9/RECO
/MinimumBias/Commissioning10-SD_EGMonitor-v9/RECO
/MinimumBias/Commissioning10-SD_JetMETTau-v9/RECO
/MinimumBias/Commissioning10-SD_JetMETTauMonitor-v9/RECO
/MinimumBias/Commissioning10-SD_Mu-v9/RECO
/MinimumBias/Commissioning10-SD_MuMonitor-v9/RECO

General page:

https://twiki.cern.ch/twiki/bin/viewauth/CMS/FirstCollisionsAnalysis

MC:

https://twiki.cern.ch/twiki/bin/viewauth/CMS/SWGuideFrontierConditions

Egamma

https://twiki.cern.ch/twiki/bin/viewauth/CMS/EgammaAt900GeV#Available_skims_on_CAF

Technical L1 bits

https://twiki.cern.ch/twiki/bin/view/CMS/L1TechnicalTriggerBits

First thing where to find the runs:

http://pccmsdqm04.cern.ch/runregistry/

Filter: Collisions09

then make a script to read it

Instructions:

https://twiki.cern.ch/twiki/bin/viewauth/CMS/DQMOnlineShortTermInstr

-- MarcoPieri - 2009/12/09

Due Jan 4, 2010 *All Conveners: prepare list of
deliverable (papers, objects, plots) from the
analysis of the 2009 data

From the analysis of 2009 data the list of deliverables is the following:

- No papers

Only possibility pi0 and eta rate in pp collisions at 900/2360 GeV? CM energy

- Objects

Selection of single crystals to be excluded in the analysis

Plots:

- The plots that were approved for ECAL and Egamma at the end of 2009

Meeting http://indico.cern.ch/conferenceDisplay.py?confId=76852

Talks: <br>

pi0 and eta: http://indico.cern.ch/getFile.py/access?contribId=9&sessionId=2&resId=3&materialId=slides&confId=76852 <br>

all: http://indico.cern.ch/getFile.py/access?contribId=20&sessionId=2&resId=1&materialId=slides&confId=76852 <br>

pizero con conv ....

An important point is to study, clarify and fix when needed and possible all aspects that were observed in the data or in the MC corresponding to the data at 900 GeV? .

1) L1 EM trigger efficiency and turn opn crve for reconstructed SuperClusters?

2) Isolation variable discrepancies mainly in ECAL due to different amplitude reconstruction in data and MC

3) Electron id and isolation variables comparison between data and MC (mailnly for BG electrons)

4) Photon id and isolation variables comparison between data and MC (mailnly for BG electrons)

5) Connected to previous: problem with isolated single crystals with energy >~ 10 GeV? : characterize and try to understand

6) Gsf tracking comparison even for all Gsf tracks

7) J/psi to ee search in view of the definition of the L1 + HLT trigger for high energy data taking

Some of these points could be approved depending on the results of the analysis

Due Jan 4, 2010 All Conveners: prepare twiki
with prioritized abstracts for CCC

ECAL calib with pi0 and eta

Craft analysis for ECAL

Egamma list of deliverables

Note: many of the items in this list are carried out in collaboration with the ECAL DPG

From the analysis of 2009 data the list of deliverable (papers, objects, plots) are the following:

Papers

We could perhaps have one paper on inclusive pi0 and eta production in pp collisions at 900 GeV (2360 GeV if possible) CM energy.

Estimated timescale of the order of 3-4 months.

Is it worth pursuing it?

Objects

Provide a selection in CMSSW to select single crystals to be excluded in the analysis (analysis needed, see below)

Plots

Approved plots for ECAL and Egamma at the end of 2009, see presentations at the meeting:

http://indico.cern.ch/conferenceDisplay.py?confId=76852

Releavant talks are:

pi0 and eta: http://indico.cern.ch/getFile.py/access?contribId=9&sessionId=2&resId=3&materialId=slides&confId=76852

all other things: http://indico.cern.ch/getFile.py/access?contribId=20&sessionId=2&resId=1&materialId=slides&confId=76852

Pizero reconstructed with conversions: not yet approved

Other important points

We should study, clarify and fix, whenever needed and possible, all aspects that were observed in the data or in the MC corresponding to the data at 900 GeV? .

1. L1 EM and HLT trigger efficiency and turn on curve for reconstructed SuperClusters
2. Isolation variable discrepancies mainly for ECAL isolation due to different amplitude reconstruction in data and MC. New MC needs to be simulated. Final selective reaodut thesholds used for data should be used for MC.
3. Electron id and isolation variables comparison between data and MC (mailnly for BG electrons). Photon id and isolation variables comparison between data and MC (mailnly for BG electrons).Work should progress further and observed discrepancies should be addressed.
4. Electrons: Gsf tracking comparison even for all Gsf tracks.
5. SC/Photons: problem with isolated single crystals with energy >~ 10 GeV. We should characterize the effect, try to understand its origin and provide a selection to ignore these crystals in the analysis
6. J/psi to ee search and definition of the required L1 + HLT trigger for high energy data taking

Some of these points could lead to approved plots depending on the results of the analysis.

Timescale of the order of 1 month.

Finally we stress that we would like to continue to keep the MinBias trigger prescaled as little as possible for the future, as long as needed. This implies having the largest possible HLT output rate.

Egamma Abstracts

Abstracts from the EgammaPOG? group combined with ECAL DPG for the CMS Conference Committee

• ECAL Commissioning and Calibration
• First Results on Electrons and Photons

ECAL Commissioning and Calibration

Data from cosmic data taking in 2008 and 2009, beam splash events and collision data at a center of mass energy of 900 GeV and 2.36 TeV have been used to calibrate and commission the electromagnetic calorimeter. We describe our achievements as well as the strategy for the calibration of the single crystal response with pi0 and eta.

First Results on Electrons and Photons

We analyzed the first LHC data from pp collisions at a center of mass energy of 900 GeV and 2.36 TeV. We measured the electromagnetic reconstructed object trigger efficiency, we reconstructed pi0 and eta peaks that will later be used to calibrate the ECAL detector.We also studied electron and photon ID variables as well as isolation variables and we verified the simulation of the detector by comparing all distributions between data and MC.

-- MarcoPieri - 2010/01/06