Search for Heavy Toplike Quarks Using Lepton Plus Jets Events in 1.96 TeV <em>pp</em> Collisions

In the subsections below we describe the real-time (‘‘on- line’’) event selection criteria by the trigger system, and the subsequent event selection ‘‘offline,’’ including

We observe no significant excess over the expected background and thus set 95% confidence level upper limits on the Higgs boson production cross section for several Higgs boson

Geometric and kinematic acceptance The acceptance of t t events in this analysis is measured in PYTHIA and then corrected, using measurements from the data, for effects that are

The systematic uncertainty on the tagged background estimate consists of the combined uncertainties from the two components of the background: the background esti- mated using the

Sloan Foundation; the Bundesministerium fu¨r Bildung und Forschung, Germany; the World Class University Program, the National Research Foundation of observed events in the signal

Assuming a top quark mass of 175  GeV/c2 and ascribing the excess to single top quark production, the cross section is measured to be 4.9+2.5−2.2(stat+syst)  pb, consistent

Stepanov Institute of Physics, National Academy of Sciences of Belarus, Minsk, Belarus 91 National Scientific and Educational Centre for Particle and High Energy Physics, Minsk,

After evaluating the average number of b -tagged jets for t t events using a Monte Carlo (MC) simulation, the number of signal events in the sample and the corresponding cross