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H->ZZ->4l update

H->ZZ->4l update. 10/02/08. Current Status. This was the first run through analysis chain from the cms note http://cms.cern.ch/iCMS/jsp/openfile.jsp?tp=draft&files=AN2008_050_v3.pdf Samples used: Hzz150 pythia Z’s forced to e, mu, tau’s Inlcuded 4e, 4mu enhancement

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H->ZZ->4l update

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  1. H->ZZ->4l update 10/02/08

  2. Current Status • This was the first run through analysis chain from the cms note • http://cms.cern.ch/iCMS/jsp/openfile.jsp?tp=draft&files=AN2008_050_v3.pdf • Samples used: • Hzz150 pythia • Z’s forced to e, mu, tau’s • Inlcuded 4e, 4mu enhancement • X section * BR = 0.01120 pb • ZZ (qq->ZZ->4l, s + t channel), comphep • Z’s forced to e, mu, tau • Used a m4l dependent K factor • Xsection * BR = 0.131 pb • Ttbar TopRex • Tt->WWbb; W -> e, mu, tau; b-> freely • Xsection * BR = 2.51 pb • Zbb • Comphep • Z-> e, mu, tau; b->freely • Filter: 4 (e/mu w/pt > 2 and |eta| < 2.7)

  3. Signal Fid Efficiency • My version of Figure 3: • Den = h->ZZ->(4e, 4, or 2e2 inclusive) • Num = h->ZZ->(4e, 4, or 2e2 exclusive with || < 2.5)

  4. Efficiency for Presel Cuts • Combine figure 13 and 14 • Various cuts for the preselection • HLT (set to one for now) • Skim ( 2 l’s with pT > 10 and 1 w/pT > 5) • Two l+l- pairs • Two pairs ml+l- > 12 for both • m4l > 100 • Isolation requirement (e’s only)

  5. #’s for Presel Cuts (4 mu channel) • = # passing fid cut and passes cut (1-6) / # passing fid cut • Fid Cut: • 4 leps (2e2mu, 4e, 4mu w/status=1) for signal • same with |eta| < 2.5 for zz • same with |eta| < 2.5 and pt > 2 for ttbar, zbb

  6. Presel Kinematics -- lepton pT

  7. Presel Kinematics -- lepton pT

  8. Presel kinematics -- m2l Blue = ml+l- closest to mZ, red = the other ml+l-

  9. Presel kinematics -- m2l

  10. Presel kinematics -- m4l

  11. Presel kinematics -- m4l

  12. Presel m4l Stacked: normalized to xsection

  13. Event Selection • We implemented the same cuts for selection (with our variables) • The numbers of events expected for 1 fb-1

  14. Efficiency for Selection Cuts

  15. Selection Kinematics -- lepton pT

  16. Selection Kinematics -- lepton pT

  17. Selection kinematics -- m2l Blue = ml+l- closest to mZ, red = the other ml+l-

  18. Selection kinematics -- m2l

  19. Selection kinematics -- m4l (norm to xsection)

  20. Selection kinematics -- m4l (norm to xsection)

  21. Selection kinematics -- m4l (norm to xsection)

  22. M4l Stacked: normalized to xsection

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