期刊
PHYSICAL REVIEW D
卷 79, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.79.052008
关键词
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资金
- U.S. Department of Energy and National Science Foundation
- Italian Istituto Nazionale di Fisica Nucleare
- Ministry of Education, Culture, Sports, Science and Technology of Japan
- Natural Sciences and Engineering Research Council of Canada
- National Science Council of the Republic of China
- Swiss National Science Foundation
- A. P. Sloan Foundation
- Bundesministeriumfur Bildung und Forschung, Germany
- Korean Science and Engineering Foundation
- Korean Research Foundation
- Science and Technology Facilities Council
- Royal Society, United Kingdom
- Institut National de Physique Nucleaire et Physique des Particules/CNRS
- Russian Foundation for Basic Research
- Ministerio de Ciencia e Innovacion
- Programa Consolider-Ingenio 2010, Spain
- Slovak RDAgency
- Academy of Finland
- STFC [ST/H001069/1, ST/H001077/1, PP/E000452/1] Funding Source: UKRI
- Science and Technology Facilities Council [PP/E000452/1, ST/H001069/1, ST/H001077/1, PP/E000444/1, PPA/A/S/2003/00461/2] Funding Source: researchfish
A measurement of the b jet production cross section is presented for events containing a Z boson produced in p (p) over bar collisions at root s = 1.96 TeV, using data corresponding to an integrated luminosity of 2 fb(-1) collected by the CDF II detector at the Tevatron. Z bosons are selected in the electron and muon decay modes. Jets are considered with transverse energy E-T > 20 GeV and pseudorapidity vertical bar eta vertical bar < 1.5 and are identified as b jets using a secondary vertex algorithm. The ratio of the integrated Z + b jet cross section to the inclusive Z production cross section is measured to be 3.32 +/- 0.53(stat) +/- 0.42(syst) x 10(-3). This ratio is also measured differentially in jet E-T, jet eta, Z-boson transverse momentum, number of jets, and number of b jets. The predictions from leading-order Monte Carlo generators and next-to-leading-order QCD calculations are found to be consistent with the measurements within experimental and theoretical uncertainties.
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