Search for the top quark at D0 using multivariate methods

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We report on the search for the top quark in p{bar p} collisions at the Fermilab Tevatron ({radical}s = 1.8 TeV) in the di-lepton and lepton+jets channels using multivariate methods. An H-matrix analysis of the e{mu} data corresponding to an integrated luminosity of 13.5{plus_minus}1.6 pb{sup {minus}1} yields one event whose likelihood to be a top quark event, assuming m{sub top} = 180 GeV/c{sup 2}, is ten times more than that of WW and eighteen times more than that of Z {yields} {tau}{tau}. A neural network analysis of the e+jets channel using a data sample corresponding to an integrated luminosity of ... continued below

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12 p.

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Bhat, P.C. & Collaboration, D0 July 1, 1995.

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Description

We report on the search for the top quark in p{bar p} collisions at the Fermilab Tevatron ({radical}s = 1.8 TeV) in the di-lepton and lepton+jets channels using multivariate methods. An H-matrix analysis of the e{mu} data corresponding to an integrated luminosity of 13.5{plus_minus}1.6 pb{sup {minus}1} yields one event whose likelihood to be a top quark event, assuming m{sub top} = 180 GeV/c{sup 2}, is ten times more than that of WW and eighteen times more than that of Z {yields} {tau}{tau}. A neural network analysis of the e+jets channel using a data sample corresponding to an integrated luminosity of 47.9{plus_minus}5.7 pb{sup {minus}1} shows an excess of events in the signal region and yields a cross-section for t{bar t} production of 6.7{plus_minus}2.3 (stat.) pb, assuming a top mass of 200 GeV/c{sup 2}. An analysis of the e+jets data using the probability density estimation method yields a cross-section that is consistent with the above result.

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12 p.

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INIS; OSTI as DE95016648

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  • 10. topical workshop on proton-antiproton collider physics, Batavia, IL (United States), 9-13 May 1995

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  • Other: DE95016648
  • Report No.: FNAL/C--95/211-E
  • Report No.: CONF-9505137--12
  • Grant Number: AC02-76CH03000
  • Office of Scientific & Technical Information Report Number: 106494
  • Archival Resource Key: ark:/67531/metadc621656

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  • July 1, 1995

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • April 1, 2016, 4:55 p.m.

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Bhat, P.C. & Collaboration, D0. Search for the top quark at D0 using multivariate methods, article, July 1, 1995; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc621656/: accessed August 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.