We describe a measurement of the top quark mass using events with two charged leptons collected 
by the CDFII Detector from pp collisions with $\sqrt(s)$=1.96 TeV at the Fermilab Tevatron. The 
posterior probability of the top quark pole mass is calculated using the differential 
cross-section for the tt production and decay expressed with respect to observed leptons and jets 
momenta. The presence of backgrond events in the collected samle is modeled using calculations of 
the differential cross-sections for major background processes. This measurement represents the 
first application of this method to events with two charged leptons. In a data sample with 
integrated luminosity of 340 pb-1, we observe 33 candidat events and measure Mtop = 162.2 +- 6.1 
(stat) +- 3.4 (syst) GeV/c^2.


Posted to /cdf/pub/thesis/cdf8028_kovalev.ps
    http://www-cdf.fnal.gov/thesis/cdf8028_kovalev.ps

Posted by danielw