Top Physics Validation:14.1.0 Reconstruction,

Simulation and Bytestream

Paul S MiyagawaThe University of Manchester

Reconstruction 14.1.0.1 vs 14.0.0.1

• Objective– Check 14.1.0 reconstruction

• AOD Datasets (Run 5200 ttbar)– valid1.005200.T1_McAtNlo_Jimmy.recon.AOD. e322_s412_r421

• Reco 14.1.0.1; 48k events– valid1.005200.T1_McAtNlo_Jimmy.recon.AOD.e322_s412_r386 (reference)

• Reco 14.0.0.1; 28k events

• Plots in Appendix A: 14.1.0 Reco vs 14.0.0 Reco– Plots show no difference– Electrons, muons, jets, b-jets, fake jets, missing Et– See web pages for more plots

• http://www.hep.manchester.ac.uk/atlas/TopMC/TopMCvalidation.html

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Simulation 14.1.0.1 vs 13.0.40.4

• Objective– Check 14.1.0 simulation

• AOD Datasets (Run 5200 ttbar)– valid1.005200.T1_McAtNlo_Jimmy.recon.AOD. e322_s429_r426

• Sim 14.1.0.1, CSC-05-00-00; 48k events– valid1.005200.T1_McAtNlo_Jimmy.recon.AOD.e322_s412_r421 (reference)

• Sim 13.0.40.4, CSC-02-01-00; 48k events

• Plots in Appendix B: 14.1.0 Sim vs 14.0.0 Sim– Plots show minor differences– Electrons, muons, jets, b-jets, fake jets, missing Et– See web pages for more plots

• http://www.hep.manchester.ac.uk/atlas/TopMC/TopMCvalidation.html

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Simulation 14.1.0.1 vs 13.0.40.4 Electrons (3)

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More candidates due to backtracking?

Phi resolution worse?

Simulation 14.1.0.1 vs 13.0.40.4 b-jets (2)

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Reconstruction efficiency slightly lower?

14.1.0.1 BS AOD vs RDO AOD

• Objective– Check 14.1.0 bytestream reconstruction

• AOD Datasets (Run 5200 ttbar)– valid1.005200.T1_McAtNlo_Jimmy.recon.AOD. e322_s413_b30_r423

• RDO BS 13.0.40.5, BS AOD 14.1.0.1, old LAr digi; 11.5k events– valid1.005200.T1_McAtNlo_Jimmy.recon.AOD.e322_s412_r421 (reference)

• Direct RDO AOD 14.1.0.1, new LAr digi; 48k events

• Plots in Appendix C: BS AOD vs RDO AOD– Muons missing in central region– Electrons, jets, b-jets, missing Et look fine– See web pages for more plots

• http://www.hep.manchester.ac.uk/atlas/TopMC/TopMCvalidation.html

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14.1.0.1 BS vs RDO Muons

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Staco muons, Pt > 10 GeV

Related to missing barrel TRT photons?

Conclusions• Reconstruction in 14.1.0.1 (R13 sim + digi) shows

no differences with 14.0.0.1• Simulation in 14.1.0.1 shows minor differences

with 13.0.40.4– More electron candidates, probably due to backtracking

• Medium IsEM cut removes the extra candidates

– Phi resolution of electrons slightly worse?– Reconstruction efficiency of b-jets slightly worse?

• Bytestream reconstruction in 14.1.0.1 missing muons in barrel region– Possibly related to missing barrel TRT photons?

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Appendix A:Reconstruction in 14.1.0.1

Reconstruction 14.1.0.1 vs 14.0.0.1 Electrons (1)

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• Medium IsEM cut• Et > 20 GeV• Matched to e from W

decay

Reconstruction 14.1.0.1 vs 14.0.0.1 Electrons (2)

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Reconstruction 14.1.0.1 vs 14.0.0.1 Electrons (3)

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Reconstruction 14.1.0.1 vs 14.0.0.1 Muons (1)

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• Staco muons• Pt > 10 GeV• Matched to μ from W decay

Reconstruction 14.1.0.1 vs 14.0.0.1 Muons (2)

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Reconstruction 14.1.0.1 vs 14.0.0.1 Muons (3)

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Reconstruction 14.1.0.1 vs 14.0.0.1 Jets (1)

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• Cone4 tower jets• Pt > 40 GeV• |η| < 2.5• Matched to quark from W

or t decay

Reconstruction 14.1.0.1 vs 14.0.0.1 Jets (2)

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Reconstruction 14.1.0.1 vs 14.0.0.1 Jets (3)

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Reconstruction 14.1.0.1 vs 14.0.0.1 b-jets (1)

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• Cone4 tower jets• Pt > 40 GeV• |η| < 2.5• b-tag weight ≥ 7.05• Matched to b quark from t

decay

Reconstruction 14.1.0.1 vs 14.0.0.1 b-jets (2)

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Reconstruction 14.1.0.1 vs 14.0.0.1 b-jets (3)

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Reconstruction 14.1.0.1 vs 14.0.0.1 fake jets (1)

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• Cone4 tower jets• Pt > 40 GeV• |η| < 2.5• Not matched to quark from

W or t decay

Reconstruction 14.1.0.1 vs 14.0.0.1 fake jets (2)

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Reconstruction 14.1.0.1 vs 14.0.0.1 Missing Et

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Appendix B:Simulation in 14.1.0.1

Simulation 14.1.0.1 vs 13.0.40.4 Electrons (1)

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• Medium IsEM cut• Et > 20 GeV• Matched to e from W

decay

Simulation 14.1.0.1 vs 13.0.40.4 Electrons (2)

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Simulation 14.1.0.1 vs 13.0.40.4 Muons (1)

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• Staco muons• Pt > 10 GeV• Matched to μ from W decay

Simulation 14.1.0.1 vs 13.0.40.4 Muons (2)

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Simulation 14.1.0.1 vs 13.0.40.4 Muons (3)

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Simulation 14.1.0.1 vs 13.0.40.4 Jets (1)

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• Cone4 tower jets• Pt > 40 GeV• |η| < 2.5• Matched to quark from W

or t decay

Simulation 14.1.0.1 vs 13.0.40.4 Jets (2)

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Simulation 14.1.0.1 vs 13.0.40.4 Jets (3)

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Simulation 14.1.0.1 vs 13.0.40.4 b-jets (1)

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• Cone4 tower jets• Pt > 40 GeV• |η| < 2.5• b-tag weight ≥ 7.05• Matched to b quark from t

decay

Simulation 14.1.0.1 vs 13.0.40.4 b-jets (3)

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Simulation 14.1.0.1 vs 13.0.40.4 fake jets (1)

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• Cone4 tower jets• Pt > 40 GeV• |η| < 2.5• Not matched to quark from

W or t decay

Simulation 14.1.0.1 vs 13.0.40.4 fake jets (2)

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Simulation 14.1.0.1 vs 13.0.40.4 Missing Et

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Appendix C:Bytestream in 14.1.0.1

14.1.0.1 BS vs RDO Electrons

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Medium IsEM cut, Et > 20 GeV

14.1.0.1 BS vs RDO Jets

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Cone4 tower jets, Et > 40 GeV, |η| < 2.5

14.1.0.1 BS vs RDO b-jets

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Cone4 tower jets, Et > 40 GeV, |η| < 2.5, b-tag weight ≥ 7.05

14.1.0.1 BS vs RDO Missing Et

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