Publication
Title
Top quark mass measurement in the $t\overline{t}$ all hadronic channel using a matrix element technique in $p\overline{p}$ collisions at $\sqrt{s}$=1.96 TeV
Author
Institution/Organisation
CDF Collaboration
Abstract
 We present a measurement of the top quark mass in the all hadronic channel (tt̅ →bb̅ q1q̅ 2q3q̅ 4) using 943  pb-1 of pp̅ 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 tt̅ 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.
Language
English
Source (journal)
Physical review : D : particles, fields, gravitation, and cosmology / American Physical Society. - Ridge, N.Y., 2004 - 2015
Physical review : D : particles and fields. - Lancaster, Pa, 1970 - 2003
Publication
Ridge, N.Y. : American Physical Society , 2009
ISSN
1550-7998 [print]
1550-2368 [online]
Volume/pages
79 :7 (2009) , p. 072010,1-072010,28
ISI
000266408300013
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
 Faculty/Department Research group Publication type Subject Affiliation Publications with a UAntwerp address