Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2003-02-23
Physics
High Energy Physics
High Energy Physics - Experiment
presented at HCP2002
Scientific paper
We present a novel approach that is being developed at DZero for extracting information from data through a direct comparison of all measured variables in an event with a matrix element that describes the entire production process. The method is exemplified in the extraction of the mass of the top quark in top-antitop events in the lepton+jets final state. Monte Carlo studies suggest that an improvement of about a factor of two in statistical uncertainty on the mass of the top quark can be achieved relative to previously published work for the same channel. Preliminary results from the re-analysis provide a reduction in the statistical uncertainty of almost a factor of 1.6, corresponding to an effective factor of 2.4 increase in the size of the data sample.
Estrada J. J.
for the DZero Collaboration
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