We present two new measurements of the top-quark mass. Using the same methodology applied in Run I, the CDF experiment uses 72 event/pb of Run II data to measure M_(top) = 171.2 ± 13.4_(stat) ± 9.9_(syst) GeV/c~2. On the other hand, the DO experiment, using 125 event/pb from Run I, and appling a new method that extracts information from data through a direct calculation of a probability for each event, obtains M_(top) = 180.1 ± 3.6_(stat) ± 4.0_(syst) GeV/c~2.
展开▼
