Prospects for associated single top quark production cross section measurements in the dilepton decay mode with ATLAS

This page contains approved plots and results as they appear in the ATL-PHYS-PUB-2009-001 note. Only the note contains all the relevant information and should thus be consulted if one of the plots is used.

Figure 2 : (a) Distributions of the number of reconstructed jets with pT >30 GeV and (b) selection efficiency as a function of the upper cut on the second jet pT for simulated signal (green full line, discs) and top pair (blue dashed line, squares) events having two good high-pT leptons of opposite sign and at least one good high-pT jet. Uncertainties are due to Monte Carlo statistics only.

Figure 3 : (a) Df between the leading muon and =ET directions as a function of jhj of the leading muon, for Z ! mm events having two good high-pT opposite-signed leptons and =ET>30 GeV. (b) Scatter plot of fake =ET due to muon momentum mismeasurement versus total =ET for Z ! mm events having two good high-pT muons that pass (red discs) and fail (black circles) the muon spectrometer crack vetos.

Figure 4 : Z!ee BDT input variable distributions after kinematics cuts for signal (black line) and Z!ee background events (red region with horizontal stripes), ordered by separation power as defined in the text. Uncertainties are from Monte Carlo statistics only.

Figure 5 : t ¯t BDT input variable distributions after kinematics cuts for signal (black line) and t ¯t background events (blue region with diagonal hashing) in the em final state, ordered by separation power as defined in the text. Uncertainties are from Monte Carlo statistics only.