Top Mass Measurements at the Tevatron Run II

Abstract

The latest top quark mass measurements by the CDF and DØ~ experiments are presented here. The mass has been determined in the dilepton ($\ttbar \to eμ,ee,μμ$ + jets +$\met$) and lepton plus jets ($\ttbar \to e$ or $\mu$ + jets +$\met$) final states. The most accurate single result from lepton plus jets channel is 173.5${}_{-3.6}^{+3.7}$(stat. + Jet Energy Scale Systematic)$\pm 1.3$(syst.) ~GeV/c${}^2$, which is better than the combined CDF and DØ~ Run~I average. A preliminary and unofficial average of the best experimental Run~II results gives $M_{top}$ = $172.7\pm 3.5$ GeV/c${}^2$.

19 pages, 8 figures, presented at 19th Rencontres de Physique De La Vallee D'Aoste, La Thuile