Direct Measurement of the Top Quark Mass

Details Direct Measurement of the Top Quark Mass Direct Measurement of the Top Quark Mass

1997-03-13

arxiv.org/abs/hep-ex/9703008v1

Phys.Rev.Lett.79:1197-1202,1997

Physics

High Energy Physics

High Energy Physics - Experiment

11 pages with 3 encapsulated PostScript figures and 1 encapsulated PostScript table included in the body of the article

Scientific paper

10.1103/PhysRevLett.79.1197

We measure the top quark mass m_t using t tbar pairs produced in the D0 detector by root(s) = 1.8 TeV p pbar collisions in a 125 pb^-1 exposure at the Fermilab Tevatron. We make a two constraint fit to m_t in t tbar --> b W^+ bbar W^- final states with one W decaying to q qbar and the other to e nu or mu nu. Events are binned in fit mass versus a measure of probability for events to be signal rather than background. Likelihood fits to the data yield m_t = 173.3 +- 5.6 (stat) +- 6.2 (syst) GeV/c^2.

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