Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2011-07-27
Physics
High Energy Physics
High Energy Physics - Experiment
Sumitted to the EPS 2011 Conference
Scientific paper
We combine results from CDF and D0 on direct searches for the standard model (SM) Higgs boson (H) in ppbar collisions at the Fermilab Tevatron at sqrt{s}=1.96 TeV. Compared to the previous Tevatron Higgs boson search combination more data have been added, additional channels have been incorporated, and some previously used channels have been reanalyzed to gain sensitivity. We use the MSTW08 parton distribution functions and the latest theoretical cross sections when comparing our limits to the SM predictions. With up to 8.2 fb-1 of data analyzed at CDF and up to 8.6 fb-1 at D0, the 95% C.L. our upper limits on Higgs boson production are factors of 1.17, 1.71, and 0.48 times the values of the SM cross section for Higgs bosons of mass m_H=115 GeV/c^2, 140 GeV/c^2, and 165 GeV/c^2, respectively. The corresponding median upper limits expected in the absence of Higgs boson production are 1.16, 1.16, and 0.57. There is a small (approx. 1 sigma) excess of data events with respect to the background estimation in searches for the Higgs boson in the mass range 125
CDF The
D0 Collaborations
Group Higgs Working
New Phenomena the Tevatron
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