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Jet Validation

Jet Validation. Kittikul Kovitanggoon *, Chiyoung Jeog , Sung-Won Lee Texas Tech University. Jet Collections. Jet Collections with Algorithms. Icone5 Calo Jets Icone5 Pflow Kt4 Calo Jets Kt6 Calo Jets AntiKt5 Calo Jets AntiKt5 JPT AntiKt5 PFlow AntiKt7 Calo Jets.

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Jet Validation

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  1. Jet Validation KittikulKovitanggoon*, ChiyoungJeog, Sung-Won Lee Texas Tech University

  2. Jet Collections

  3. Jet Collections with Algorithms • Icone5 Calo Jets • Icone5 Pflow • Kt4 Calo Jets • Kt6 Calo Jets • AntiKt5 Calo Jets • AntiKt5 JPT • AntiKt5 PFlow • AntiKt7 Calo Jets

  4. Histograms to Validate • Had energy • HF • Gen Jet • - pT , η ,and φ • Miscellaneous • - Leading Jet Energy and • pT • - Had and Em timing • - Dijet Mass • L2L3 Corrected Jets pT in AK jets • - pT ratio wrtη • - pT ratio wrtpT • Jet energy • Jet Momentum • Jet pT - Jet pT scale • Jet Mass • Jet η and φ • Em Energy

  5. Validation Procedures • After the MC RelVals for new version of CMSSW are released and posted on HN. • We pick up the jet datasets like QCD and TTbar to be run on our validation module. • We compare the histograms between new version and previous version. • If no discrepancy is indicated, we report this version pass. • If discrepancy is indicated, we ask the experts what causes this discrepancy. • The validation result can be found at http://highenergy.phys.ttu.edu/~keng/validation

  6. Histograms Jet Energy Em energy Fraction of Jets The black dot histogram is for new release.Red line filled histogram is for reference.

  7. Histograms Corrected jets Corrected jet pT Corrected jet pT ratio The black dot histogram is for new release.Red line filled histogram is for reference.

  8. Jet Validation in Winter 2010

  9. Jet Validation in Winter 2010

  10. 3_11_0_ pre5 64 bit and 3_10_1 Full Sim HF timing is changed • Time phase and Reco: 4TS->2TS so that the soft part of spectra (noise)and entire HF timing is changed. • HF response improve wrt 3110pre3 Fast Sim HF response improve

  11. 4_2_0_pre4 • The change is expected due to the changes in the EE SR threshold settings.

  12. 4_2_0_ pre6 and 4_2_0_pre6 wrt HCAL • There is a substantial effect of SamplingFactors (Digi) and to smallerextent of HcalRespCorrs (Reco) on the HCAL energy scale. HE and HB/HE gap increase is more pronounced than HB one, HF is not affected. 4_2_0_pre6 wrt 420pre5 4_2_0_pre6 wrt HCAL dataset

  13. JetMET Data validation • We currently look at DQM plots created centrally and posted on DQM GUI • This validation using RelVal_run2010B dataset (previous valskim) for this validation • We do this validation for every new CMSSW version after MC RelVal validation The black line histogram is for new release.The filled histogram is for reference.

  14. JetMET Data validation

  15. Conclusion and Plans • Jet Validation is moving smoothly. • We added corrected jets for AK jets . • Implementing our new validation module to the central DQM sequence.

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