Slide 1: Title slide - MSSM Higgs Searches at D0.

Slide 2: Talk outline - Introduction, MSSM Higgs searches (neutral and 
charged), Next-to-MSSM search and conclusion.

Slide 3: Tevatron's performance - The Tevatron has performed very well to 
date delivering ~7 fb-1 to each experiment. By the end of 2011 running 
between 10-12 fb-1 is expected.

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Slide 4: Talk outline - Neutral MSSM searches.
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Slide 5: MSSM Higgs Sector - Brief introduction to the MSSM Higgs Sector.

Slide 6: MSSM Higgs boson production - Search strategy for neutral MSSM 
Higgs Bosons ('A,h,H' = phi) at the Tevatron. The most promising search 
channels, and those covered at D0, are: phi->tau tau, phi b->bbb, phi b-> 
tautau b.

Slide 7: Tau-Identification - Description of hadronic tau identification 
at D0 which is ~60% efficient on hadronic tau-jets for ~1% fake-rate on 
jets.

slide 8: b-jet Identification - Description of b-jet identification at D0 
which is ~50% efficient on b-jets for ~0.5% fake-rate on udsg-jets.

Slide 9: Neutral MSSM Higgs->tau tau - Introduction to 2.2 fb-1 neutral 
MSSM Higgs decaying to two taus (phi->tau tau) with event selection. The 
data/MC distribution for the pT of the hadronic taus is shown.

Slide 10: Neutral MSSM Higgs->tau tau - Description of and data/MC 
distributions of the visible mass variable which is used to set limits, no 
significant excess is seen.

Slide 11: Neutral MSSM Higgs->tau tau - Model independent limits on 
sigmaxBR(phi->tautau) which range from ~22-1 pb for mA = 90-300 GeV.

Slide 12: Neutral MSSM Higgs->tau tau - Limits are interpreted in the 
mu=+200 GeV no-mixing and mhmax scenarios, tan(beta) > 40-60 is excluded 
for mA < 180 GeV.

Slide 13: Neutral MSSM Higgs-> bb+b[b] - Introduction to the 2.6 fb-1 phi 
b->bbb analysis including event selection. Comparison of the data and 
predicted background dijet mass distributions which are used to set 
limits. No significant excess is seen.

Slide 14: Neutral MSSM Higgs-> bb+b[b] - Description of signal modelling 
in phi b->bbb analysis. MCFM is used to weight Pyhtia events to NLO, the 
large width is modelled using a combination of different Higgs mass points 
and MSSM NLO corrections are obtained from FeynHiggs.

Slide 15: Neutral MSSM Higgs-> bb+b[b] - Limits are interpreted in the mA 
tanbeta phase space at tree-level and in the mu=-200 GeV mhmax scenario. 
tanBeta > 40-80 is excluded for mA = 90 - 220 GeV.

Slide 16:  Neutral MSSM Higgs->tautau+b - Introduction to the 2.7 fb-1 phi 
b->btautau analysis including event selection. The data/MC distributions 
of the multivariate discriminant, which is used to set limits, are shown.

Slide 17: Neutral MSSM Higgs->tautau+b - Model independent limits are set 
on the cross-section x BR(phi->tautau) > 3.7-0.4 pb for mA = 90-320 GeV. 
Limits are also interpreted in the mu=-200 mhmax scenario, tanBeta > 40-80 
is excluded for mA = 90-180 GeV.

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Slide 18: Talk Outline - MSSM Combinations
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Slide 19: D0 MSSM Combination - Details of the D0 neutral MSSM Higgs 
combination. The phi b->bbb, phi->tautau and phi b->tautau b channels are 
combined using up to 2.6fb-1 of data. The combined data events are shown 
on a log(S/B) plot, no significant excess is seen.

Slide 20: D0 MSSM Combination - Combined limits interpreted in the 
mu=+200 no-mixing and the mu=-200 mhmax scenarios. tanBeta > 30 is 
excluded at 130 GeV. The limits are the most stringent to date at a hadron 
collider.

Slide 21: Tevatron MSSM Combination - Details of the Tevatron neutral MSSM 
Higgs combination. The D0 and CDF phi->tautau limits are combined using 
2.2 and 1.8 fb-1 of data respectively. A model independent limit is set on 
cross section x BR(phi->tautau) > 18-0.7 pb for mA = 100-200 GeV.

Slide 22: Tevatron MSSM Combination - The combined limits interpreted in 
the mu=+200 GeV no-mixing and the mu=-200 GeV mhmax scenarios. tanBeta > 
32-50 is excluded for mA 100-200 GeV.

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Slide 23: Talk Outline - Charged Higgs
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Slide 24: Charged Higgs->cs/tau nu - Introduction to the published 1 fb-1 
search for charged MSSM Higgs bosons in top decays. Top decay channels are 
searched for either deficits or excesses dependent. Distributions of the 
expected and observed yields are shown for various BR(t->H+b).

Slide 25: Charged Higgs->cs/tau nu - Limits are set on the BR(t->H+b) of
> 0.22 for leptophobic and > 0.15-0.19 for tauonic charged Higgs decays.
Limits are interpreted in the tanBeta-mA phase space in the MSSM 
no-mixing, mhmax and CPXgh scenarios.

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Slide 26: Talk Outline - Next-to-MSSM (NMSSM)
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Slide 27: NMSSM Higgs->aa - Introduction to the NMSSM Higgs sector. Two 
additional pseudo-scalar Higgs bosons are introduced (a and s), the h->aa 
decay dominates.

Slide 28: NMSSM Higgs->aa - Outline of the h->aa->mumumumu search 
including event selection. Limits are set on cross section x BR(a->mumu) < 
10-5.6 fb for ma = 0.2-3 GeV and mh = 100 GeV.

Slide 29: NMSSM Higgs->aa - Outline of the h->aa->mumutautau search 
including event selection. Comparison of the data and predicted background 
dimuon mass distributions. Limits are set on the cross section x BR(h->aa) 
for mh = 100 GeV and BR(h->aa) = 1 of 1.5-8 pb for m_a 3.5-19 GeV.

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Slide 30: Talk Outline - Prospects and Conclusions
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Slide 31: Prospects - 6 fb-1 of data is now available and D0 is aiming for 
rapid inclusion into the analyses. Updated searches in all channels 
expected over the short term, long term limits down to a tanBeta ~20 GeV 
at low mA can be excluded.

Slide 32: Conclusion - Very exciting times ahead for MSSM searches.