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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/23846
Title: 
Measurement of the t(t)over-bar production cross section in p(p)over-bar collisions using dilepton events
Author(s): 
Institution: 
  • Univ Buenos Aires
  • Centro Brasileiro de Pesquisas Físicas (CBPF)
  • Universidade do Estado do Rio de Janeiro (UERJ)
  • Universidade Estadual Paulista (UNESP)
  • Univ Alberta
  • Simon Fraser Univ
  • York Univ
  • McGill Univ
  • Univ Sci & Technol China
  • Universidad de los Andes
  • Charles Univ Prague
  • Czech Tech Univ
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  • Univ Aix Marseille 2
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  • Univ Paris 06
  • Univ Paris 07
  • CEA
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  • Johannes Gutenberg Univ Mainz
  • Univ Munich
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  • Panjab Univ
  • University of Delhi
  • Tata Inst Fundamental Res
  • Natl Univ Ireland Univ Coll Dublin
  • Korea University
  • Sungkyunkwan Univ
  • CINVESTAV
  • NIKHEF H
  • Univ Amsterdam
  • Radboud Univ Nijmegen
  • Joint Inst Nucl Res
  • Institute for Theoretical and Experimental Physics (ITEP)
  • Moscow MV Lomonosov State Univ
  • Inst High Energy Phys
  • Petersburg Nucl Phys Inst
  • Lund Univ
  • Royal Inst Technol
  • Univ Stockholm
  • Uppsala Univ
  • Univ Zurich
  • University of Lancaster
  • Univ London Sch Pharm
  • University of Manchester
  • University of Arizona
  • Lawrence Berkeley Natl Lab
  • Univ Calif Berkeley
  • Calif State Univ Fresno
  • University of California, Riverside (UCR)
  • Florida State University
  • Fermilab Natl Accelerator Lab
  • Univ Illinois
  • No Illinois Univ
  • Northwestern University (NU)
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  • Iowa State Univ
  • University of Kansas (KU)
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  • Louisiana Tech University
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  • University of Washington
ISSN: 
1550-7998
Abstract: 
We present a measurement of the t (t) over bar pair production cross section in p (p) over bar collisions at root s=1.96 TeV utilizing approximately 425 pb(-1) of data collected with the D0 detector. We consider decay channels containing two high p(T) charged leptons (either e or mu) from leptonic decays of both top-daughter W bosons. These were gathered using four sets of selection criteria, three of which required that a pair of fully identified leptons (i.e., e mu, ee, or mu mu) be found. The fourth approach imposed less restrictive criteria on one of the lepton candidates and required that at least one hadronic jet in each event be tagged as containing a b quark. For a top quark mass of 175 GeV, the measured cross section is 7.4 +/- 1.4(stat)+/- 1.0(syst) pb and for the current Tevatron average top quark mass of 170.9 GeV, the resulting value of the cross section is 7.8 +/- 1.8(stat+syst) pb.
Issue Date: 
1-Sep-2007
Citation: 
Physical Review D. College Pk: Amer Physical Soc, v. 76, n. 5, 28 p., 2007.
Time Duration: 
28
Publisher: 
Amer Physical Soc
Source: 
http://dx.doi.org/10.1103/PhysRevD.76.052006
URI: 
http://hdl.handle.net/11449/23846
Access Rights: 
Acesso restrito
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/23846
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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