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Title

Measurement of the tt production cross section in pp collisions at √s=1.96  TeV using events with large missing transverse energy and jets

CollaborationWith : Clark, Allan Geoffrey / Garcia Navarro, Jose Enrique / Lister, Alison / Wu, Xin
Published in Physical Review. D. 2011, vol. 84, no. 03, p. 032003
Abstract In this paper we report a measurement of the tt production cross section in pp collisions at s√=1.96  TeV using data corresponding to an integrated luminosity of 2.2  fb−1 collected with the CDF II detector at the Tevatron accelerator. We select events with significant missing transverse energy and high jet multiplicity. This measurement vetoes the presence of explicitly identified electrons and muons, thus enhancing the tau contribution of tt decays. Signal events are discriminated from the background using a neural network, and heavy flavor jets are identified by a secondary-vertex tagging algorithm. We measure a tt production cross section of 7.99±0.55(stat)±0.76(syst)±0.46(lumi) pb, assuming a top mass mtop=172.5  GeV/c2, in agreement with previous measurements and standard model predictions.
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CDF COLLABORATION. Measurement of the tt production cross section in pp collisions at √s=1.96  TeV using events with large missing transverse energy and jets. In: Physical Review. D, 2011, vol. 84, n° 03, p. 032003. https://archive-ouverte.unige.ch/unige:38708

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Deposited on : 2014-07-15

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