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

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

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 pp̄ collisions at the Fermilab Tevatron Collider at √s=1.96TeV. With 4.8fb-1 of integrated luminosity analyzed at CDF and 5.4fb-1 at D0, the 95% confidence level upper...

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Bibliographic Details
Main Authors: Aaltonen, T, Abazov, V, Abbott, B, Abolins, M, Acharya, B, Adams, M, Adams, T, Adelman, J, Aguilo, E, Alexeev, G, Alkhazov, G, Alton, A, Alvarez Gonzalez, B, Alverson, G, Alves, G, Amerio, S, Amidei, D, Anastassov, A, Ancu, L, Annovi, A, Antos, J, Aoki, M, Apollinari, G, Appel, J, Apresyan, A
Format: Journal article
Language:English
Published: 2010
Description
Summary: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 pp̄ collisions at the Fermilab Tevatron Collider at √s=1.96TeV. With 4.8fb-1 of integrated luminosity analyzed at CDF and 5.4fb-1 at D0, the 95% confidence level upper limit on σ(gg→H)×B(H→W+W-) is 1.75 pb at mH=120GeV, 0.38 pb at mH=165GeV, and 0.83 pb at mH=200GeV. 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. © 2010 The American Physical Society.

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