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Combined search for the Higgs boson with the D0 experiment
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2013 (English)In: Physical Review D, ISSN 1550-7998, Vol. 88, no 5, 052011- p.Article in journal (Refereed) Published
Abstract [en]

We perform a combination of searches for standard model Higgs boson production in p (p) over bar collisions recorded by the D0 detector at the Fermilab Tevatron Collider at a center of mass energy of root 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 <= M-H <= 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 2 standard deviations, consistent with the presence of a standard model Higgs boson of mass 125 GeV.

Place, publisher, year, edition, pages
2013. Vol. 88, no 5, 052011- p.
National Category
Natural Sciences
URN: urn:nbn:se:uu:diva-209863DOI: 10.1103/PhysRevD.88.052011ISI: 000324487000007OAI: oai:DiVA.org:uu-209863DiVA: diva2:659781
Available from: 2013-10-28 Created: 2013-10-28 Last updated: 2013-10-28Bibliographically approved

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Buszello, Claus P
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High Energy Physics
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