Title
Top quark mass measurement in the <tex>$t\overline{t}$</tex> all hadronic channel using a matrix element technique in <tex>$p\overline{p}$</tex> collisions at <tex>$\sqrt{s}$</tex>=1.96 TeV Top quark mass measurement in the <tex>$t\overline{t}$</tex> all hadronic channel using a matrix element technique in <tex>$p\overline{p}$</tex> collisions at <tex>$\sqrt{s}$</tex>=1.96 TeV
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Lancaster, Pa ,
Subject
Physics
Source (journal)
Physical review : D : particles and fields. - Lancaster, Pa, 1970 - 2003
Volume/pages
79(2009) :7 , p. 072010,1-072010,28
ISSN
0556-2821
ISI
000266408300013
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
We present a measurement of the top quark mass in the all hadronic channel (tt&#773; →bb&#773; q1q&#773; 2q3q&#773; 4) using 943  pb-1 of pp&#773; collisions at √s=1.96   TeV collected at the CDF II detector at Fermilab (CDF). We apply the standard model production and decay matrix element (ME) to tt&#773; candidate events. We calculate per-event probability densities according to the ME calculation and construct template models of signal and background. The scale of the jet energy is calibrated using additional templates formed with the invariant mass of pairs of jets. These templates form an overall likelihood function that depends on the top quark mass and on the jet energy scale (JES). We estimate both by maximizing this function. Given 72 observed events, we measure a top quark mass of 171.1±3.7(stat+JES)±2.1(syst)  GeV/c2. The combined uncertainty on the top quark mass is 4.3  GeV/c2.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/26d290/5784e195.pdf
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