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Search for standard-model Z and Higgs bosons decaying into a bottom-antibottom quark pair in proton-antiproton collisions at 1.96 TeV
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SYSNO ASEP 0519457 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Search for standard-model Z and Higgs bosons decaying into a bottom-antibottom quark pair in proton-antiproton collisions at 1.96 TeV Author(s) Aaltonen, T. (FI)
Amerio, S. (IT)
Amidei, D. (US)
Lysák, Roman (FZU-D) RID, ORCIDNumber of authors 398 Article number 072002 Source Title Physical Review D. - : American Physical Society - ISSN 2470-0010
Roč. 98, č. 7 (2018), s. 1-9Number of pages 9 s. Language eng - English Country US - United States Keywords Batavia TEVATRON Coll ; CDF ; statistical analysis ; data analysis method ; experimental results ; anti-p p --> Higgs particle anything Subject RIV BF - Elementary Particles and High Energy Physics OECD category Particles and field physics Method of publishing Open access Institutional support FZU-D - RVO:68378271 UT WOS 000447091600002 EID SCOPUS 85056190367 DOI 10.1103/PhysRevD.98.072002 Annotation The Collider Detector at Fermilab collected a unique sample of jets originating from bottom-quark fragmentation (b-jets) by selecting online proton-antiproton (pp¯) collisions with a vertex displaced from the pp¯ interaction point, consistent with the decay of a bottom-quark hadron. This data set, collected at a center-of-mass energy of 1.96 TeV, and corresponding to an integrated luminosity of 5.4 fb-1, is used to measure the Z-boson production cross section times branching ratio into bb¯. The number of Z→bb¯ events is determined by fitting the dijet-mass distribution, while constraining the dominant b-jet background, originating from QCD multijet events, with data. The result, σ(pp¯→Z)×B(Z→bb¯)=1.11±0.08(stat)±0.14(syst) nb, is the most precise measurement of this process, and is consistent with the standard-model prediction. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2020 Electronic address http://hdl.handle.net/11104/0304435
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