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Jets+MET @ 10TeV

- initial look at the two- and three-jets+MET (CSC-style) analyses with 10pb -1 -. Jets+MET @ 10TeV. ATLAS SUSY meeting MET signatures subgroup, 24 Sept’08 -. Alan Barr, Claire Gwenlan (Oxford). Outline MC samples/selection cuts initial results summary/future work.

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Jets+MET @ 10TeV

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  1. - initial look at the two- and three-jets+MET (CSC-style) analyses with 10pb-1 - Jets+MET @ 10TeV • ATLAS SUSY meeting • MET signatures subgroup, 24 Sept’08 - Alan Barr, Claire Gwenlan (Oxford) • Outline • MC samples/selection cuts • initial results • summary/future work

  2. MC samples/selection cuts MC samples: • v12 fullsim samples, as used in CSC note 5 (full list in backups) • these samples generated at 14TeV -> reweight PDFs to 10TeV [as described: http://indico.cern.ch/conferenceDisplay.py?confId=33528 (C. Gwenlan) ] Cuts:[two-/three-jet+MET analyses @ 10TeV, with 10pb-1] • look at “loose”, “medium” and “tight” phase space cuts (see below) • [as proposed by S. Caron: http://indico.cern.ch/conferenceDisplay.py?confId=38731] • [other cuts as in CSC note 5(for now; see backups for full list) ] MET>80 GeV in all cases Jets+MET at 10TeV with 10pb-1

  3. Results (i): Meff 10TeV, 10pb-1 two-jet+MET [all cuts incl. J70_XE70 trigger] Jets+MET at 10TeV with 10pb-1

  4. Results (ii): Meff 10TeV, 10pb-1 three-jet+MET [all cuts incl. J70_XE70 trigger] Jets+MET at 10TeV with 10pb-1

  5. Results (iii): MT2 Jets+MET at 10TeV with 10pb-1

  6. Results (iv): MT2 Jets+MET at 10TeV with 10pb-1

  7. summary/future work in principle, light SUSY discoverable with 10pb-1 at 10TeV … IF enough statistics (and sufficient understadning of the detector!) to determine backgrounds to resonable precision Next steps: - background determinations - trigger studies Jets+MET at 10TeV with 10pb-1

  8. Extras Jets+MET at 10TeV with 10pb-1

  9. MC samples (backgrounds) Jets+MET at 10TeV with 10pb-1

  10. MC samples (signal) Jets+MET at 10TeV with 10pb-1

  11. Reminder: PDF reweighting • hadronic cross section given by: for a particular kinematic configuration with s, t, u, should just need to change the probability that incoming partons *had* that configuration i.e. just a PDF re-weight proton PDFs hard subprocess cross section Re-weight MC to 10 TeV using: pTJet,1,2 >150,100 GeV xi : x of parton i at 14TeV; x i’: x of parton i at 10TeV Jets+MET at 10TeV with 10pb-1

  12. selection cuts Cuts:[two-/three-jet+MET analyses @ 10TeV, 10pb-1] “loose”, “medium” or “tight” (as given below) as in CSC5 (for now) Jets+MET at 10TeV with 10pb-1

  13. Results (extras): Two-Jet+MET[Meff analysis] various SUX signal MC compared to total SM background Jets+MET at 10TeV with 10pb-1

  14. Results (extras): Three-Jet+MET[Meff analysis] various SUX signal MC compared to total SM background Jets+MET at 10TeV with 10pb-1

  15. Results (i): Meff 10TeV, 10pb-1 two-jet+MET [all cuts except trigger] Jets+MET at 10TeV with 10pb-1

  16. Results (ii): Meff 10TeV, 10pb-1 three-jet+MET [all cuts except trigger] Jets+MET at 10TeV with 10pb-1

  17. Results (iii): MT2 10TeV, 10pb-1 two-jet+MET [jet-pT, lepton veto cuts only] Jets+MET at 10TeV with 10pb-1

  18. Results (iv): MT2 10TeV, 10pb-1 two-jet+MET [jet-pT, lepton-veto, MET cuts only] Jets+MET at 10TeV with 10pb-1

  19. Results (v): MT2 10TeV, 10pb-1 two-jet+MET [jet-pT, lepton-veto, MET cuts and J70_XE70 trigger] Jets+MET at 10TeV with 10pb-1

  20. Results (vi): MT2 10TeV, 10pb-1 three-jet+MET [jet-pT, and lepton-veto cuts only] Jets+MET at 10TeV with 10pb-1

  21. Results (vii): MT2 10TeV, 10pb-1 three-jet+MET [jet-pT, lepton-veto, MET cuts only] Jets+MET at 10TeV with 10pb-1

  22. Results (viii): MT2 10TeV, 10pb-1 three-jet+MET [jet-pT, lepton-veto, MET cuts and J70_XE70 trigger] Jets+MET at 10TeV with 10pb-1

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