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EtMiss with Minimum Bias

N. Davidson A. Phan G. Atkinson The University of Melbourne. EtMiss with Minimum Bias. EtMiss In Minimum Bias. 14TeV Sample: AANT produced by N. Kanaya. CSC sample 005001. RDOs produced with Athena 11.0.42 Reconstructed with Athena 12.0.5. 25,000 events 900GeV Sample:

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EtMiss with Minimum Bias

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  1. N. Davidson A. Phan G. Atkinson The University of Melbourne EtMiss with Minimum Bias

  2. EtMiss In Minimum Bias • 14TeV Sample: • AANT produced by N. Kanaya. • CSC sample 005001. RDOs produced with Athena 11.0.42 • Reconstructed with Athena 12.0.5. • 25,000 events • 900GeV Sample: • CSC sample 005005. Athena 11.0.5 • 30,000 events. (9 x 10^-8 pb^-1 integrated luminosity)

  3. Ex and Ey components • Gaussians were fit to the x and y components to measure the resolution. • MET_Final vs Object:

  4. EtMiss Range • Very little true missing energy in minimum bias events • MET_Final, MET_RefFinal and Object MET give similar results.

  5. Components of EtMiss for Min Bias • Useful to see what contributes to EtMiss for minbias. • Corrected Topoclusters (for Final), Cells outside of objects (for RefFinal).

  6. EtSum Range • Up to 300GeV? • Different Algorithms give comparable results

  7. Ex(y) Resolution vs. EtSum • Results similar to TDR for fit to : • sigma = p0 *sqrt(EtSum) MET_Final MET_FinalRef

  8. EtMiss at 900GeV • Resolution of Ex(y) components: • Fit component to gaussian gives sigma: 1.911 • Fit to const*sqrt(EtSum) gives const: 0.4874+-0.0021

  9. EtMiss at 900GeV • EtMiss Range and Performance

  10. EtMiss at 900GeV • EtSum Range

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