1 / 11

Enhancing Missing ET Studies: Insights and Improvements at Louisiana Tech University

This report details the ongoing improvements in Missing ET studies led by Lee Sawyer at Louisiana Tech University. Utilizing the p13.06.01 version of d0trigsim and L3FCalMEt, initial runs revealed significant shifts and issues with event triggers. The analysis drawn from multiple runs compares the performance of CAL_UNP and CAL_UNP_NADA tools to assess calorimeter responses under varying conditions. Further development efforts focus on L3TJetMEt and L3TCalMEt, with tests to refine calibration and minimize non-linearity corrections.

salim
Download Presentation

Enhancing Missing ET Studies: Insights and Improvements at Louisiana Tech University

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. Level 3 Missing ET:Plans for Improvements Lee Sawyer Lee Sawyer Louisiana Tech University

  2. Level 3 Missing ET Studies • Used p13.06.01 version of d0trigsim and l3fCalMEt • Almost ran “out of the box” – Had to remove unpackers/muons from toollist • Default for offline trigger list: CalMEt_PvtxZ uses CAL_UNP_NADA • Default L3TCalMEt.rcp : UseCH=TRUE • Runs analyzed • Used the two runs for p13 certification comparisons: • 170246 (p12) and 170247 (p13) • These are BAD runs based on Jet/Met run list! • Shift-xy=6.41 GeV for 170246, 5.64 GeV for 170247 • Pulled raw files (parts 1 and 4 for each run) from SAM • Ran over 2000 events for each run. • Used a GOOD run from same period for comparison • Run 170277 • Shift-xy=0.57 GeV • Will compare results with L3Nada on/off and CH on/off • When L3Nada is on, L3NadaThreshold = 3.0001 • L3Nada off => Changing to CAL_UNP tool instance • Both CAL_UNP and CAL_UNP_NADA have calib=0 (No calorimeter non-linearity corrections in this study.) • EtaMax = 3.7 in L3TCalMEt.rcp On hold until SAM problems are fixed! Lee Sawyer Louisiana Tech University

  3. Run 170247: Missing ET Using CAL_UNP_NADA Using CAL_UNP • No, I do not have the labels backwards! • Problems with NADA differentiating hot and warm regions (see below) Lee Sawyer Louisiana Tech University

  4. Run 170247: Other Plots Using CAL_UNP_NADA Using CAL_UNP • Phi of the missing ET shows a spike at 2.3 when L3Nada is turned on! Lee Sawyer Louisiana Tech University

  5. Run 170247: Other Plots Using CAL_UNP_NADA Using CAL_UNP Scalar ET Run I Significance Lee Sawyer Louisiana Tech University

  6. CALanalyze • Ran calanalyze over the corresponding reco files • Able to look at CAL info, NADA cells. Number of hits in Run 170247 vs iphi and ieta Lee Sawyer Louisiana Tech University

  7. Warm vs Hot <= Warm region in EM Hot cell in HAD => Lee Sawyer Louisiana Tech University

  8. NADA Offline Finds the Warm region, but misses the hot cell? Lee Sawyer Louisiana Tech University

  9. RECO_analyze • Reco_analyze run over run 170247 • Offline missingET information for comparison cf. <mET>= 16.03 GeV w/ L3NADA <mET>= 8.06 GeV w/out L3NADA At Level 3 Lee Sawyer Louisiana Tech University

  10. NADA Quantities Offline VETNADA is missingET contribution from NADA cells Scalar sum of NADA cell energies shows a significant negative contribution Lee Sawyer Louisiana Tech University

  11. Other Work Ongoing • Testing new results class for L3TCalMEt and L3TJetMEt • Finish development work on L3TJetMEt • Assistance would be appreciated • Mostly need someone to run the tool over interesting data sets and test triggers • Continue tests on L3TCalMEt • More tests of L3NADA on good/bad runs • Test calib (non-linearity corrections) and UseCH. Lee Sawyer Louisiana Tech University

More Related