Title: "Mass Measurement of the Top Quark in the All Hadronic channel using an In Situ Calibration of the Jet Energy Scale at CDF"

Abstract:

We present a preliminary measurement of the top quark mass in the all- hadronic channel, using 1 fb^-1 of ppbar collisions at sqrt(s) = 1.96 TeV collected at the Collider Detector at Fermilab. Assuming standard model ttbar production and using t he matrix element as a weight, an event probability is calculated. The top quark mass is reconstructed for each event by m aximizing the event probability, and so Monte Carlo templates are produced, dependent of the true top quark mass and the j et energy scale. The most likely top mass is extracted by fitting the data to the templates distributions.