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JES Resolution

JES Resolution. Analysis specific Generic larger issues. Asymmetric Errors. 0-100. 160-500. 100-160. JES Resolution [Asymmetry]. This is potentially nasty. 0. 0.5. 1.0. This plot is done on all data. No efficient jet cut. 80-100. 40-60. Asymmetry. 100-160. 60-80. Note:

jakeem-mooney
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JES Resolution

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  1. JES Resolution • Analysis specific • Generic larger issues

  2. Asymmetric Errors 0-100 160-500 100-160

  3. JES Resolution [Asymmetry] This is potentially nasty. 0 0.5 1.0 This plot is done on all data. No efficient jet cut.

  4. 80-100 40-60 Asymmetry 100-160 60-80 Note: Asymmetry can be 1.0 – 1.5.

  5. Asymmetry Variable A A x - 1

  6. Key: Jet [Area ~ Pt] Track connected to PV Track not connected to PV Track connected to 2VTX RECO Muon How Can This Be? corrJCCB • JCCB: • 3 jets, two balancing and a small one • corrJCCB: • 2 jets, one large and one small • Basically one real jet failed jet quality cuts • Redo insisting #JCCB = #corrJCCB = 2 JCCB

  7. 40-60 Improved Cuts y = N exp(Ax3 + Bx2 + Cx): c2/dof = 11/19 = 0.58 Gaussian: c2/dof = 13.9/20 = 0.70 60-80 Asymmetry no longer a problem Y = N exp(Ax3 + Bx2 + Cx): c2/dof = 10/21 = 0.48 Gaussian: c2/dof = 19.1/21 = 0.91

  8. JES v5.3 Energy Resolution(Fixed)

  9. OLD JES v5.3 Energy Resolution[Jet QC fixed] NEW Visible improvement.

  10. New and Improved ds/dpt ~Final answer! • Remaining issues: • 90-100 GeV point. • JT25, guessed threshold • Residual JES issues. • (see next) • D0Note in preparation. • Final to QCD and/or EB imminent. • On to 2VTX land.

  11. JES v5.3 STD JES 5.3 gives a 3.8% offset for m-tagged jets. It is independent of Pt (75-250 GeV). Maybe higher above that. Need to rebin and revisit the idea that the muon Pt may be mis-measured. Same plot when scaling the m-tagged jets by 3.8%.

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