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Measurement of the top quark mass in the lepton plus jets final state with the matrix element method
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Number of Authors: 580
2006 (English)In: Physical Review D, ISSN 1550-7998, Vol. 74, no 9, 092005- p.Article in journal (Refereed) Published
Abstract [en]

We present a measurement of the top quark mass with the matrix element method in the lepton+jets final state. As the energy scale for calorimeter jets represents the dominant source of systematic uncertainty, the matrix element likelihood is extended by an additional parameter, which is defined as a global multiplicative factor applied to the standard energy scale. The top quark mass is obtained from a fit that yields the combined statistical and systematic jet energy scale uncertainty. Using a data set of 0.4 fb(-1) taken with the D0 experiment at Run II of the Fermilab Tevatron Collider, the mass of the top quark is measured using topological information to be: m(top)(center dot+jets)(topo)=169.2(-7.4)(+5.0)(stat+JES)(-1.4)(+1.5)(syst) GeV, and when information about identified b jets is included: m(top)(center dot+jets)(b-tag)=170.3(-4.5)(+4.1)(stat+ JES)(-1.8)(+1.2)(syst) GeV. The measurements yield a jet energy scale consistent with the reference scale.

Place, publisher, year, edition, pages
2006. Vol. 74, no 9, 092005- p.
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-37440DOI: 10.1103/PhysRevD.74.092005ISI: 000242409700010ScopusID: 2-s2.0-33751535218OAI: diva2:433864
QC 20110811. Antal författare: 580.Available from: 2011-08-11 Created: 2011-08-11 Last updated: 2012-02-03Bibliographically approved

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Gollub, NilsHansson, PerStrandberg, Jonas
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