## Combined Upper Limit on Standard Model Higgs Boson Production at CDF for Winter 2009## The CDF Higgs Working Group |

Contents

Documentation

(N)NLO Cross Section Table

Bayesian Framework

Posterior Probability

Expected limits from Pseudo Experiments

Combined Results with 3.6 fb

Summary Plots sorted by s/b

Projections

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Abstract

Documentation

- Public Note
- January 2009 CDF Higgs Combination
- Summer 2008 CDF Higgs Combination
- Winter 2008 CDF Higgs Combination

- WH->lνbb
- VH->MET+bb
- ZH->ll bb
- VH, VBF, ggH ->2jet+H->τ&tau
- VH->2jet+H->bb
- gg->H->WW->lνl&nu

L=2.7 fb^{-1} |
Web Page | Notes: ME+BDT, NN, Combination | |

L=2.1 fb^{-1} |
Web Page | Public Note | |

L=2.7 fb^{-1} |
Web Page | Public Note | |

L=2.0 fb^{-1} |
Web Page | Public Note | |

L=2.0 fb^{-1} |
Web Page | Public Note | |

L=3.6 fb^{-1} |
Web Page | Public Note |

Cross Sections

- The cross sections at points not specified in the TeV4LHC Tables are obtained by interpolating log(cross section) vs. mH between neighboring points in the table. These cross sections have been verified with MCFM.
- The gg -> H production cross section is calculated at NNLL in QCD and also includes two-loop electroweak effects. For details, see C. Anastasiou, R. Boughezal and F. Petriello, "Mixed QCD-electroweak corrections to Higgs boson production in gluon fusion", arXiv:0811.3458 [hep-ph] (2008). and D. de Florian and M. Grazzini, "Higgs production through gluon fusion: updated cross sections at the Tevatron and the LHC", arXiv:0901.2427v1 [hep-ph] (2009).

Bayesian Framework

The integrals over the uncertain parameters with their correlated priors from external constraints are done with a Markov Chain Monte Carlo integration method, using the Metropolis-Hastings algorithm.

Combination Results with 3.6 fb^{-1} (Winter 2009)

Posterior Probability

Expected Limits with Pseudo-experiments

Events Ranked by s/b

Projections

2xCDF Projections

Experimental Contacts

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Matt Herndon herndon AT hep.wisc.edu Eric James jameseb AT fnal.gov Tom Junk trj AT fnal.gov Ben Kilminster bjk AT fnal.gov Nils Krumnack nils AT fnal.gov Weiming Yao wmyao AT lbl.gov

January 28, CDF Higgs Working Group