Measurement of the top-quark mass in all-hadronic decays in pp? collisions at CDF II
Journal
Physical Review Letters
Journal Volume
98
Journal Issue
14
Date Issued
2007
Author(s)
Aaltonen, T. et al. (CDF Collaboration)
Abstract
We present a measurement of the top-quark mass Mtop in the all-hadronic decay channel tt-->W+bW-b-->q1q2bq3q4b. The analysis is performed using 310 pb-1 of sqrt[s]=1.96 TeV pp[over ] collisions collected with the CDF II detector using a multijet trigger. The mass measurement is based on an event-by-event likelihood which depends on both the sample purity and the value of the top-quark mass, using 90 possible jet-to-parton assignments in the six-jet final state. The joint likelihood of 290 selected events yields a value of Mtop=177.1+/-4.9(stat)+/-4.7(syst) GeV/c2.
Type
journal article