Strong Evidence for <em>ZZ</em> Production in <em>pp</em> Collisions at s√=1.96  TeV

From the LO QCD predictions for the background and signal cross sections, we would expect about 1% of the events in the fit region of the dijet invariant mass spectrum (60–126 GeV=c 2

Systematic uncertainties have been assigned to each of these contributions (see Sec. VII), and the M S distribution in a Monte Carlo simulation of b jets has been compared with

In the case of electrons misidentified as tau candidates, false 0 reconstruction can overestimate the hadronic tau candidate energy by up to a factor of 2, since the candidate

While the predicted shape of the J 30 T distribution agrees with the data well (after adding the expected contribution from t t), the total uncertainty on the background

Two data sets are used for this measurement: a sample of jets from inclusive jet production, containing only a negligible amount of b -jets, and a sample where the heavy-flavor

IX. CROSS SECTION LIMIT CALCULATION To extract the signal from the data a Bayesian-based statistical procedure is applied. The region between 60 and 120 GeV of the m jj distribution

Since the Z þ c jet cross section in the data is unknown and the simulation may not accurately describe the rate of light jets that are reconstructed with a secondary vertex,

Sources of systematic uncertainty in the background yield of tagged b jets include the uncertainty in the b -jet tagging efficiency in the data (a relative 6% uncertainty on all