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  • D0 Collaboration

    arXiv.org, 09/2013
    Paper, Journal Article

    We perform a combination of searches for standard model Higgs boson production in \(p\bar{p}\) collisions recorded by the D0 detector at the Fermilab Tevatron Collider at a center of mass energy of \(\sqrt{s}=1.96\) 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 \(90\leq M_H \leq 200\) 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 \(90 < M_H < 101\) GeV and \(157 <M_H< 178\) GeV, with an expected exclusion of \(155 <M_H<175\) GeV. In the range \(120 < M_H < 145\) GeV, the data exhibit an excess over the expected background of up to two standard deviations, consistent with the presence of a standard model Higgs boson of mass 125 GeV.