Combined opposite side flavor tagger
On this web page we present the combination of opposite side taggers
(muon, electron, jet charge and kaon tagger) into one single tagger
with a neural network.
An increase of the tagger performance from &epsilon D2 = 1.5 % to
&epsilon D2 = 1.8 %
is achieved.
The combined opposite side tagger is described in more detail in
CDF note 8460.
The following figures are available for download:
- Figure 1 (gif): Network input variables: Correlations between the network input variables and to the training target
- Figure 2 (gif): Network training: Raw purity as a function of network output
- Figure 3 (gif): Calibration: Measured dilution as function of predicted dilution with fit of scale factor S in l+SVT data
- Figure 4 (gif): Comparison: Predicted dilution times the tagging decision for the combined tagger versus the hierarchical tagger
- Figure 5 (gif): Improvement: Change in D2 from hierarchical to combined tagger versus the predicted dilution of the jet charge tagger in events with lepton and jet charge tag