From ZZ to ZH : How Low Can These Cross Sections Go or Everybody, Let's Cross Section Limbo!

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We report on two searches performed at the D0 detector at the Fermi National Laboratory. The first is a search for Z di-boson production with a theoretical cross section of 1.4 pb. The search was performed on 2.6 fb{sup -1} of data and contributed to the first observation of ZZ production at a hadron collider. The second is a search for a low mass Standard Model Higgs in 4.2 fb{sup -1} of data. The Higgs boson is produced in association with a Z boson where the Higgs decays hadronically and the Z decays to two leptons. The ZZ search was ... continued below

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178 pages

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Strauss, Emanuel Alexandre & /SUNY, Stony Brook August 1, 2009.

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We report on two searches performed at the D0 detector at the Fermi National Laboratory. The first is a search for Z di-boson production with a theoretical cross section of 1.4 pb. The search was performed on 2.6 fb{sup -1} of data and contributed to the first observation of ZZ production at a hadron collider. The second is a search for a low mass Standard Model Higgs in 4.2 fb{sup -1} of data. The Higgs boson is produced in association with a Z boson where the Higgs decays hadronically and the Z decays to two leptons. The ZZ search was performed in both the di-electron and di-muon channels. For the ZH search, we will focus on the muonic decays where we expanded the traditional coverage by considering events in which one of the two muons fails the selection requirement, and is instead reconstructed as an isolated track. We consider Higgs masses between 100 and 150 GeV, with theoretical cross sections ranging from 0.17 to 0.042 pb, and set upper limits on the ZH production cross-section at 95% confidence level.

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178 pages

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  • Report No.: FERMILAB-THESIS-2009-29
  • Grant Number: AC02-07CH11359
  • DOI: 10.2172/964427 | External Link
  • Office of Scientific & Technical Information Report Number: 964427
  • Archival Resource Key: ark:/67531/metadc926446

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  • August 1, 2009

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  • Nov. 13, 2016, 7:26 p.m.

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  • Nov. 28, 2016, 6:07 p.m.

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Strauss, Emanuel Alexandre & /SUNY, Stony Brook. From ZZ to ZH : How Low Can These Cross Sections Go or Everybody, Let's Cross Section Limbo!, thesis or dissertation, August 1, 2009; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc926446/: accessed June 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.