| Abstract: | The top-quark mass M_top is measured using top quark-antiquark pairs produced
in proton-antiproton collisions at a center-of-mass energy of 1.96 TeV and
decaying into a fully hadronic final state. The full data set collected with
the CDFII detector at the Fermilab Tevatron Collider, corresponding to an
integrated luminosity of 9.3 fb-1, is used. Events are selected that have six
to eight jets, at least one of which is identified as having originated from a
b quark. In addition, a multivariate algorithm, containing multiple kinematic
variables as inputs, is used to discriminate signal events from background
events due to QCD multijet production. Templates for the reconstructed
top-quark mass are combined in a likelihood fit to measure M_top with a
simultaneous calibration of the jet-energy scale. A value of M_top = 175.07+-
1.19(stat)+1.55-1.58(syst) GeV/c^2 is obtained for the top-quark mass. |
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