Improved Search for a Higgs Boson Produced in Association with Z→l+l- in pp̅ Collisions at √s=1.96  TeV

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Aaltonen , T , Brücken , E , Devoto , F , Mehtälä , P , Orava , R & CDF Collaboration 2010 , ' Improved Search for a Higgs Boson Produced in Association with Z→l+l- in pp̅ Collisions at √s=1.96  TeV ' , Physical Review Letters , vol. 105 , no. 25 , pp. 251802 . https://doi.org/10.1103/PhysRevLett.105.251802

Title: Improved Search for a Higgs Boson Produced in Association with Z→l+l- in pp̅ Collisions at √s=1.96  TeV
Author: Aaltonen, Timo; Brücken, Erik; Devoto, Francesco; Mehtälä, Petteri; Orava, Risto; CDF Collaboration
Contributor: University of Helsinki, Department of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Department of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Department of Physics
Date: 2010-12-13
Language: eng
Number of pages: 7
Belongs to series: Physical Review Letters
ISSN: 0031-9007
URI: http://hdl.handle.net/10138/24427
Abstract: We present a search for the standard model Higgs boson produced with a Z boson in 4.1 fb^-1 of data collected with the CDF II detector at the Tevatron. In events consistent with the decay of the Higgs boson to a bottom-quark pair and the Z boson to electrons or muons, we set 95% credibility level upper limits on the ZH production cross section times the H -> b bbar branching ratio. Improved analysis methods enhance signal sensitivity by 20% relative to previous searches beyond the gain due to the larger data sample. At a Higgs boson mass of 115 GeV/c^2 we set a limit of 5.9 times the standard model value.
Subject: 114 Physical sciences
hep-ex
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