期刊
PHYSICAL REVIEW D
卷 84, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.84.032003
关键词
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资金
- U.S. Department of Energy
- 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
- Bundesministerium fuer Bildung und Forschung, Germany
- Korean Science and Engineering Foundation
- Korean Research Foundation
- Particle Physics and Astronomy Research Council
- Royal Society, UK
- Russian Foundation for Basic Research
- Comision Interministerial de Ciencia y Tecnologia, Spain
- European Community [HPRN-CT-2002-00292]
- STFC [ST/H001026/2, ST/H001026/1, ST/H001069/1, PP/E003699/2, PP/E003699/1] Funding Source: UKRI
- Science and Technology Facilities Council [PP/E003699/2, ST/H001026/1, ST/H001069/1, PP/E003699/1, ST/H001026/2] Funding Source: researchfish
- Grants-in-Aid for Scientific Research [18071002] Funding Source: KAKEN
In this paper we report a measurement of the t (t) over bar production cross section in p (p) over bar collisions at root s = 1.96 TeV using data corresponding to an integrated luminosity of 2.2 fb(-1) collected with the CDF II detector at the Tevatron accelerator. We select events with significant missing transverse energy and high jet multiplicity. This measurement vetoes the presence of explicitly identified electrons and muons, thus enhancing the tau contribution of t (t) over bar decays. Signal events are discriminated from the background using a neural network, and heavy flavor jets are identified by a secondary-vertex tagging algorithm. We measure a t (t) over bar production cross section of 7.99 +/- 0.55(stat) +/- 0.76(syst) +/- 0.46(lumi) pb, assuming a top mass m(top) = 172.5 GeV/c(2), in agreement with previous measurements and standard model predictions.
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