September

• Schedule
• Works
  • Simple example
  • Measurement of efficiency
  • Make the histograms of deviation and missing energy

Schedule

Date	Subject	Comments
26	Meeting with Filip	Discussed muon efficiency
4	Meeting with Filip	Simple example : To draw histograms of muon and electron
10	Meeting with Filip	Changed the event source
		To draw efficiency and purity plots
12	Meeting with Filip	Add the event source
14	Meeting with Filip	Started to study CRAB
17	CMS WEEK	Opening session
18	CMS WEEK	PH - muon
19	CMS WEEK	PH - SUSY/BSM

Daily works

Wed. 26 ~ Fri. 28. Draw the deviation and missing energy plot

• Filip proposed to draw the deviation and missing energy plot.
• Data Set : DrellYan_mumu_40
• Software Release : CMSSW_1_5_2
• CRAB version : CRAB_1_5_4
• Cuts
  • |η| < 2.4
  • Pt > 10 GeV
• Results :

  Missing Energy	Deviation of muon have to be less than 0.1%

Mon. 24. ~ Tues. 25 measurement of muon and electron efficiency by CRAB

• Changed the CRAB version : If the case of using CMSSW_1_5_2, have to use CRAB version over CRAB_1_5_3.
• Changed the SLC version : If the case of using CMSSW_1_5_2. have to use SLC4.
• Software Release : CMSSW_1_5_2
• CRAB version : CRAB_1_5_3
• Cuts
  • |η| < 2.4
  • Pt > 10 GeV
• Event number :
  • Electron : 5500
  • Muon : 15000
• Result

  Efficiency of Electron
  Efficiency of Muon

Fri. 21.

I tried again after fixing my path. But I got the another problem. Nothing happened after the jobs submitted. So I asked again and I knew two solution. One is SLC version difference and the other is difference between CMSSW and CRAB version.

Thur. 20.

• Tried to perform the event by using CRAB. ( only muon process )
  • Event number : 15000
  • Analysis tool : SusyAnalyzer
  • CRAB version : CRAB_1_5_2
  • CMSSW version : CMSSW_1_5_2
  • Changed the matching code.
  • Did'nt change the cut.
• The result and conclusion :
  • Error of CRAB : "no found castor" -> After asking to CRAB hypernews about this, I know that the problem can be solved by fixing my path.

Mon. 17. ~ Wed. 19.

The source file was not available because that is in fermilab. So I have to use the CRAB. I referred to web twiki page for using CRAB ( crab twiki page ) and started to study CRAB.

Thur. 13. ~ Fri. 14.

• Changed the source of electron : RelVal152Z-EE ( the source of muon did not change : DrellYan_mumu40 )
• Changed my fault of coding in .cfg file and bin number from 100 to 50.
• Chose the five source file.
  • Event number :
    • Electron : 2500
    • Muon : 5000
• Result and conclusion :
  • Electron :
    • Efficiency of electron vs eta was good except large error bar. But efficiency of electron vs Pt was not good. There was some efficiency over 1 and large error bar.
    • Purity plot was very large error bar.
    • Why the event number was only 550 ?
  • Muon :
    • Efficiency and purity plot was as same as ever.
    • Why the event number was only 1000?
• Next works :
  • Try to check the source file whether available or not.
  • Try to change the matching code in .cc file for reducing the size of error bar.
• If the source is not available in cern machine, Filip proposed to using CRAB for more event.

Wed. 12.

• Met with Filip and discussed about yesterday results.
  • About large error bar -> Perform the more event.
  • Poor plot of electron -> Change the source.
  • Efficiency > 1 -> Reduce bin number.
  • Puriity = 1 -> He didn't reply.
  • About event number -> This was the wrong coding in .cfg file. Try make it good.

Mon. 10. ~ Tues. 11. start measuring of efficiency

• Had a second meeting with Filip and discussed my result.
• He proposed new one.
  • Draw efficiency and purity plots.
  • Change the source from sample in susyanalyzer to Drellyan and choose 5 root file in the source.
• Coded for efficiency and purity.
• Event number : 5000
• Source : DrellYan_mumu40
• Performed the cmsRun by using same analysis tool and same cut.
• Result and Conclusion :
  • There was the very large error bar.
  • Electron plot was not clear.
  • There was the efficiency over 1.
  • All of the purity was 1.
  • Even chosen event number was 5000, performed event number was only 1000.
• Try to contact Filip and discuss about these.

Tues. 4. ~ Thur. 6. Simple example

• Met with Filip and he proposed to draw pt and eta histograms of muon and electron.
• This is very simple example and the goal is training for using Susyanalyzer.
• Analysis tool : SusyAnalyzer
• CMSSW version : CMSSW_1_5_2
• Cut :
  • 0 GeV/c < Pt < 100 GeV/c
  • |η| < 2.4
• Source : I used sample source in Susyanalyzer.
• Coded for matching system.
• Result :

-- JeewonSeo - 26 Oct 2007