Measurement of the Top Quark Mass in the All-Hadronic Mode at CDF
  We present a measurement of the top quark mass (Mtop) in the all-hadronic decay channel using 5.8 fb^{-1} of proton-antiproton data collected with the CDF II detector at the Fermilab Tevatron Collider. Events with 6 to 8 jets are selected by a neural network algorithm and by the requirement that at least one of the jets is tagged as a b quark jet. The measurement is performed by a likelihood fit technique, which determines simultaneously Mtop and the jet energy scale (JES) calibration. The fit yields a value of 172.5 +- 1.4(stat) +-1.0(JES) +-1.1(syst) GeV/c^2. 
CDF Collaboration : T. Aaltonen, B. \'Alvarez Gonz\'alez, S. Amerio,   D. Amidei, A. Anastassov, A. Annovi, J. Antos, G. Apo...
hep-ex