Combined Tevatron upper limit on gg -> H -> W+W- and constraints on the Higgs boson mass in fourth-generation fermion models

For complete list of authors see http://prd.aps.org/abstract/PRD/v82/i1/e011102
Publikationen har totalt 1025 författare, CDF and DØ Collaborations: T. Aaltonen et al.
We combine results from searches by the CDF and D0 collaborations for a standard model Higgs boson (H) in the process gg -> H -> W+W- in p (p) over bar collisions at the Fermilab Tevatron Collider at root s = 1.96 TeV. With 4.8 fb(-1) of integrated luminosity analyzed at CDF and 5.4 fb(-1) at D0, the 95% confidence level upper limit on sigma(gg -> H) x B(H -> W+W-) is 1.75 pb at m(H) = 120 GeV, 0.38 pb at m(H) = 165 GeV, and 0.83 pb at m(H) = 200 GeV. Assuming the presence of a fourth sequential generation of fermions with large masses, we exclude at the 95% confidence level a standard-model-like Higgs boson with a mass between 131 and 204 GeV.

Åsman, BarbroStockholms universitet,Uppsala universitet,Högenergifysik,Fysikum,Elementarpartikelfysik(Swepub:su)bar (author)
Bélanger-Champagne, CamilleStockholms universitet,Uppsala universitet,Högenergifysik,Fysikum(Swepub:uu)cambe131 (author)
Zucchelli, S. (author)
Uppsala universitetHögenergifysik (creator_code:org_t)

By the author/editor: Aaltonen, T.; Åsman, Barbro; Bélanger-Champag ...; Zucchelli, S.

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Subatomic Physic ...

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