Search for the standard model Higgs boson produced in association with a Z boson in 7.9 fb[superscript −1] of p[bar-over p] collisions at √s = 1.96 TeV using the CDF II detector
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Aaltonen-2012-Search for the standard model Higgs boson produced in association.pdf
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Author(s)
Gomez-Ceballos, Guillelmo
Goncharov, Maxim
Paus, Christoph M. E.
Date Issued
July 2012
Journal
Physics Letters B
Publisher
Elsevier
Citation
Aaltonen, T. et al. “Search for the Standard Model Higgs Boson Produced in Association with a Z Boson in of Collisions at Using the CDF II Detector.” Physics Letters B 715.1-3 (2012): 98–104. © 2012 Elsevier B.V.
Version
Final published version
Abstract
We present a search for the standard model Higgs boson produced in association with a Z boson, using up to 7.9 fb[superscript −1] of integrated luminosity from p[bar-over p] collisions collected with the CDF II detector. We utilize several novel techniques, including multivariate lepton selection, multivariate trigger parametrization, and a multi-stage signal discriminant consisting of specialized functions trained to distinguish individual backgrounds. By increasing acceptance and enhancing signal discrimination, these techniques have significantly improved the sensitivity of the analysis above what was expected from a larger dataset alone. We observe no significant evidence for a signal, and we set limits on the ZH production cross section. For a Higgs boson with mass 115 GeV/c[superscript 2], we expect (observe) a limit of 3.9 (4.8) times the standard model predicted value, at the 95% credibility level.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1016/j.physletb.2012.07.045
