Search for Single Top Quark Production using Boosted Decision Trees in 2.2 fb-1 of CDF Data

Input Variables for the BDTs in the 4jets samples:

ET and the η of both jets pT and the η of the lepton missing transverse energy in the event $\slashed{E}_T$ scalar sum of the transverse energies HT=&SigmajetsET+pT+\slashed E_T$ invariant mass of the di-jet system mj1j2 η and the transverse mass of the W boson mT(W) mass of the reconstructed top mlνb invariant mass of the lepton, neutrino and both jets mlνj1j2 charge of the lepton times the η of the b-quark jet Qxη KIT NN flavor separator Δφ between the jets and the $\slashed{E}_T$ Δφ between the jets and the lepton Δφ between the the lepton and the $\slashed{E}_T$ cosine of the angle between the lepton and the jets ET and the η the two other combinations of di-jet system invariant masses invariant mass of the three jets invariant mass of the lepton, neutrino and three jets mlνj1j2 Δφ between the 3rd jet and the $\slashed{E}_T$ Δφ between the 3rd jet and the lepton