1 / 12

Status Report 12/03/12

Status Report 12/03/12. Measurement of Z/gamma + jet angular distributions. The analysis is pre-approved Documentations CDAI: SMP-12-004 Z+1jet μ : AN-2012-037 e: AN-2012-135 γ +1jet: AN-2011-497 Theory comparison: AN-2012-230. Measurement of Z/gamma + jet angular distributions.

howe
Download Presentation

Status Report 12/03/12

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. Status Report 12/03/12

  2. Measurement of Z/gamma + jet angular distributions • The analysis is pre-approved • Documentations CDAI: SMP-12-004 Z+1jet μ: AN-2012-037 e: AN-2012-135 γ+1jet: AN-2011-497 • Theory comparison: AN-2012-230

  3. Measurement of Z/gamma + jet angular distributions • Combined results

  4. Measurement of Z/gamma + jet angular distributions • Combined results

  5. Measurement of Z/gamma + jet angular distributions • Madgraph+Pythia, Sherpa, and MCFM have similar agreement with data for yz and yjet . • For Z + 1jet, Sherpa agrees better with data for ydiff and ysum . • Parton showering and matching scheme give the difference. • Results between e and μ to be more consistent • In Z+1jet, checking unfolding results as requested by ARC members. 5

  6. Results of PDF-reweighting on Madgraph • The analysis results were presented at Generator Tools meeting. • In order to understand the discrepancies between generator, we weight the Madgraph(PDF:LO CTEQ 6L1) with Sherpa PDF (NLO CTEQ 66m). • NLO and LO PDFs difference: Ydif and Yjet < 5%, Ysum and Yz ~ 10-15% • The results will be discussed with generator experts. 6

  7. Status and Plans • Angular distribution analysis is in the process to approval. • Ntuples(muons) for AFB are done with variables to study trigger and id efficiency. • Jet validations on the new CMSSW release (610preX). • 2012 Z+jets cross section • Study the new coding structures in order to unite the analysis. • Adding the forward jets variables in the new code. 7

  8. Back up 8

  9. 9

  10. 10

  11. 11

  12. 12

More Related