Combined search for the Higgs boson with the D0 experiment
Abazov, V. M.
Acharya, B. S.
Alexeev, G. D.
PublisherAmerican Physical Society
MetadataShow full item record
We perform a combination of searches for standard model Higgs boson production in pp¯ collisions recorded by the D0 detector at the Fermilab Tevatron Collider at a center of mass energy of s√=1.96 TeV. The different production and decay channels have been analyzed separately, with integrated luminosities of up to 9.7 fb−1 and for Higgs boson masses 90≤MH≤200 GeV. We combine these final states to achieve optimal sensitivity to the production of the Higgs boson. We also interpret the combination in terms of models with a fourth generation of fermions, and models with suppressed Higgs boson couplings to fermions. The result excludes a standard model Higgs boson at 95% C.L. in the ranges 90<MH<101 GeV and 157<MH<178 GeV, with an expected exclusion of 155<MH<175 GeV. In the range 120<MH<145 GeV, the data exhibit an excess over the expected background of up to 2 standard deviations, consistent with the presence of a standard model Higgs boson of mass 125 GeV.