Search for the standard model Higgs boson in the ZH->vvbb channel in 9.5 fb-1 of ppbar collisions at sqrt(s) = 1.96 TeV

Abstract : We present a search for the standard model Higgs boson in 9.5 fb-1 of ppbar collisions at sqrt(s) = 1.96 TeV collected with the D0 detector at the Fermilab Tevatron Collider. The final state considered contains a pair of b jets and is characterized by an imbalance in transverse energy, as expected from ppbar->ZH->vvbb production. The search is also sensitive to the WH->lvbb channel when the charged lepton is not identified. The data are found to be in good agreement with the expected background. For a Higgs boson mass of 125 GeV, we set a limit at the 95% C.L. on the cross section sigma(ppbar->[Z/W]H), assuming standard model branching fractions, that is a factor of 4.3 times larger than the theoretical standard model value, while the expected factor is 3.9. The search is also used to measure a combined WZ and ZZ production cross section that is a factor of 0.94 ± 0.31(stat) ± 0.34(syst) times the standard model prediction of 4.4 pb, with an observed significance of 2.0 standard deviations.
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Journal articles
Physics Letters B, Elsevier, 2012, 716, pp.285-293. <10.1016/j.physletb.2012.08.034>


http://hal.in2p3.fr/in2p3-00720591
Contributor : Danielle Cristofol <>
Submitted on : Wednesday, July 25, 2012 - 8:00:45 AM
Last modification on : Tuesday, September 11, 2012 - 3:00:14 PM

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V.M. Abazov, M. C. Cousinou, A. Duperrin, W. Geng, E. Kajfasz, et al.. Search for the standard model Higgs boson in the ZH->vvbb channel in 9.5 fb-1 of ppbar collisions at sqrt(s) = 1.96 TeV. Physics Letters B, Elsevier, 2012, 716, pp.285-293. <10.1016/j.physletb.2012.08.034>. <in2p3-00720591>

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