1 / 11

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
Download Presentation

JES Resolution

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. 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%.

More Related