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People
Salvatore Rappoccio
Daniel Sherman Joao Guimaraes da CostaAndy Foland Melissa Franklin Harvard University Email the authors Links
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We measured the ttbar cross section in the lepton plus jets channel with >=1 and >= 2 SecVtx tags using 318 pb-1 of data. We use the transverse mass of the leptonic W-boson to reduce the Non-W background and the scalar sum of transverse energies of the event (HT) to discriminate ttbar from the other backgrounds. We use the ``Method 2'' technique to estimate the backgrounds, where a combination of data and Monte Carlo is used to estimate the backgrounds from electroweak processes, single top, fake leptons, fake tags, and real W+ Heavy Flavor production. We obtain the following cross sections:
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