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Search for the standard model Higgs boson in ℓν+jets final states in 9.7 fb(−1) of pp-bar collisions with the D0 detector
Baringer, Philip S. Bean, Alice Chen, G. Clutter, Justace Randall Sekaric, Jadranka Wilson, Graham Wallace Abazov, V. M. Abbinante, A. Abbott, B. Acharya, B. S.
Baringer, Philip S.
Bean, Alice
Chen, G.
Clutter, Justace Randall
Sekaric, Jadranka
Wilson, Graham Wallace
Abazov, V. M.
Abbinante, A.
Abbott, B.
Acharya, B. S.
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Abstract
We present, in detail, a search for the standard model Higgs boson, H, in final states with a charged lepton (electron or muon), missing energy, and two or more jets in data corresponding to 9.7 fb(−1) of integrated luminosity collected at a center-of-mass energy of s√=1.96 TeV with the D0 detector at the Fermilab Tevatron pp-bar Collider. The search uses b-jet identification to categorize events for improved signal versus background separation and is sensitive to associated production of the H with a W boson, WH→ℓνbb-bar; gluon fusion with the Higgs decaying to W-boson pairs, H→WW→ℓνjj; and associated production with a vector boson where the Higgs decays to W-boson pairs, VH→VWW→ℓνjjjj production (where V=W or Z). We observe good agreement between data and expected background. We test our method by measuring WZ and ZZ production with Z→bb-bar and find production rates consistent with the standard model prediction. For a Higgs boson mass of 125 GeV, we set a 95% C.L. upper limit on the production of a standard model Higgs boson of 5.8×σSM, where σSM is the standard model Higgs boson production cross section, while the expected limit is 4.7×σ(SM). We also interpret the data considering models with fourth generation fermions, or a fermiophobic Higgs boson.
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This is the publisher's version, also available electronically from http://journals.aps.org/prd/abstract/10.1103/PhysRevD.88.052008.
Date
2013-09-17
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American Physical Society
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V. M. Abazov et al. (D0 Collaboration). (2013). "Search for the standard model Higgs boson in ℓν+jets final states in 9.7 fb(−1) of pp-bar collisions with the D0 detector." Physical Review D, 88(5):052008. http://dx.doi.org/10.1103/PhysRevD.88.052008.