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

2. Current Status Samples used:
This was the first run through analysis chain from the cms note
Samples used:
Hzz150 pythia
Z’s forced to e, mu, tau’s
Inlcuded 4e, 4mu enhancement
X section * BR = pb
ZZ (qq->ZZ->4l, s + t channel), comphep
Z’s forced to e, mu, tau
Used a m4l dependent K factor
Xsection * BR = 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)zz tt
zbb
HLT 1
skim 3 leps
0.987
0.978
0.983
0.862
4 mu sel
0.83
0.861
2 M2mu > 12
0.869
0.84
m4l > 100
0.828
0.849
0.777
0.683
loose iso
0.818
= # 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