1 / 12

Comparative Analysis of Z-Jet Events in CMS: First vs. Second Analysis Techniques

This study contrasts two analyses of Z-Jet events utilizing 2012 datasets from CMS. The first analysis implemented methodologies from the CMS TWiki, incorporating pfNoPileup and excluding leptons during jet reclustering. Results are detailed in the provided link. Conversely, the second analysis, an independent approach suggested by Kostas and Ann-Marie, does not apply pfNoPileup or lepton removal. Both analyses use various dataset JSON files and involve specific MC selections and trigger conditions, aiming to provide comprehensive insights into jet and Z properties.

ovid
Télécharger la présentation

Comparative Analysis of Z-Jet Events in CMS: First vs. Second Analysis Techniques

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Comparison between 1st and 2nd analysis • 1st analysis was using code and instruction from https://twiki.cern.ch/twiki/bin/viewauth/CMS/ZJetsAndDPS and reported the result at http://highenergy.phys.ttu.edu/~keng/susy/plots/Zjets_2012Full.pdf ***use pfNoPileup and remove leptons from jet reclustering • 2nd analysis is independent analysis suggested by Kostas and Ann-Marie and reported the result at http://highenergy.phys.ttu.edu/~keng/susy/plots/Zjets_2012Full_KengCode_021913.pdf ***Do not use pfNoPileup and do not remove leptons from jet reclustering

  2. Datasets • Datasets of 2012 /DoubleMu/Run2012A − 13Jul2012 − v 1 /DoubleMu/Run2012A −recover – 6Aug2012 – v1 /DoubleMu/Run2012B − 13Jul2012 − v 1 /DoubleMu/Run2012C − 24Aug 2012 − v 1 DoubleMu/Run2012C –EcalRecover –11Dec2012 – v1 /DoubleMu/Run2012C − Prompt − v 2 /DoubleMu/Run2012D − Prompt − v 1 • JSON from https://twiki.cern.ch/twiki/bin/viewauth/CMS/PdmV2012Analysis Cert_190456-196531_8TeV_13Jul2012ReReco_Collisions12_JSON_v2.txt Cert_190782-190949_8TeV_06Aug2012ReReco_Collisions12_JSON.txt Cert_198022-198523_8TeV_24Aug2012ReReco_Collisions12_JSON.txt Cert_190456-203002_8TeV_PromptReco_Collisions12_JSON_v2.txt Cert_201191-201191_8TeV_11Dec2012ReReco-recover_Collisions12_JSON.txt Cert_190456-208686_8TeV_PromptReco_Collisions12_JSON.txt • MC

  3. Selections • Triggers HLT_Mu17_Mu8_v* HLT_Mu17_TkMu8_v* • Muon Muon matched trigger objects Muon pT > 20 GeV and |Muon eta| < 2.4 Opposite charge muons Tight Muon ID from Muon POG Loose PF base Combined relative ISO from Muon POG Z mass window of 71 to 111 GeV • Jets Jet pT > 30 GeV |Jet eta| < 2.4 Loose Jet ID from POG Clean Jets from muons with DeltaR<0.5 *** MC indicated in plots is signal and BG combined

  4. Z Properties Njet≥0 Njet≥0 Z mass Z phi

  5. Z Properties Njet≥0 Njet≥0 Z pT Z Y

  6. Jet Multiplicity Barrel and Endcap region (|jet η| <2.4 ) Inclusive jets Exclusive jets

  7. Z pT Njet≥1 Njet≥2

  8. Z pT Njet≥3 Njet≥4

  9. Z Rapidity Njet≥1 Njet≥2

  10. Z Rapidity Njet≥3 Njet≥4

  11. Jet pT Njet≥1 Njet≥2

  12. Jet pT Njet≥3 Njet≥4

More Related