Improved Search for a Higgs Boson Produced in Association with Z{yields}l{sup +}l{sup -} in pp Collisions at {radical}(s)=1.96 TeV

Journal Article · Fri Dec 17 04:00:00 EST 2010 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.105.251802· OSTI ID:21554475

Aaltonen, T; Brucken, E; Devoto, F; Mehtala, P; Orava, R ^[1]; Alvarez Gonzalez, B; Casal, B; Cuevas, J; Gomez, G; Palencia, E; Rodrigo, T; Ruiz, A; Scodellaro, L; Vila, I; Vilar, R ^[2]; Amerio, S; Dorigo, T; Gresele, A; Lazzizzera, I ^[3]; Amidei, D ^[4]

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1. Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00014, Helsinki (Finland)
2. Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander (Spain)
3. Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova (Italy)
4. University of Michigan, Ann Arbor, Michigan 48109 (United States)

We search for the standard model Higgs boson produced with a Z boson in 4.1 fb{sup -1} of integrated luminosity 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 multiplied by the H{yields}bb branching ratio. Improved analysis methods enhance signal sensitivity by 20% relative to previous searches. At a Higgs boson mass of 115 GeV/c{sup 2} we set a limit of 5.9 times the standard model cross section.

• OSTI ID: 21554475
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 25 Vol. 105; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

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