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

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URI: http://hdl.handle.net/10902/1858
ISSN: 1550-7998
ISSN: 1550-2368
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Author
Aaltonen, Timo Antero; Casal Laraña, Bruno; Cuevas Maestro, Francisco Javier; Gómez Gramuglio, Gervasio; Palencia Cortezón, José Enrique; Rodrigo Anoro, TeresaAutoridad Unican; Ruiz Jimeno, AlbertoAutoridad Unican; Scodellaro, Luca; Vila Alvarez, Ivan; Vilar Cortabitarte, RocíoAutoridad Unican
Date
2010-07-15
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© 2010 The American Physical Society
Publicado en
Physical Review D - Particles, Fields, Gravitation and Cosmology, 2010, 82(1), 011102(R)
Publisher
American Physical Society
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Abstract:
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 pp̅ collisions at the Fermilab Tevatron Collider at √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 σ(gg→H)×B(H→W+W-) is 1.75 pb at mH=120  GeV, 0.38 pb at mH=165  GeV, and 0.83 pb at mH=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.
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