UNIGE document Scientific Article
previous document  unige:38657  next document
add to browser collection
Title

Measurement of the tt production cross section in pp collisions at √s=1.96  TeV using soft electron b-tagging

CollaborationWith : Clark, Allan Geoffrey / Garcia Navarro, Jose Enrique / Vallecorsa, Sofia / Wu, Xin
Published in Physical Review. D. 2010, vol. 81, no. 09, p. 092002
Abstract We present a measurement of the top-quark pair-production cross section in pp collisions at s√=1.96  TeV using a data sample corresponding to 1.7  fb−1 of integrated luminosity collected with the Collider Detector at Fermilab. We reconstruct tt events in the lepton+jets channel, consisting of eν+jets and μν+jets final states. The dominant background is the production of W bosons in association with multiple jets. To suppress this background, we identify electrons from the semileptonic decay of heavy-flavor jets (“soft electron tags”). From a sample of 2196 candidate events, we obtain 120 tagged events with a background expectation of 51±3 events, corresponding to a cross section of σtt=7.8±2.4(stat)±1.6(syst)±0.5(lumi)  pb. We assume a top-quark mass of 175  GeV/c2. This is the first measurement of the tt cross section with soft electron tags in run II of the Tevatron.
Identifiers
Full text
Structures
Citation
(ISO format)
CDF COLLABORATION. Measurement of the tt production cross section in pp collisions at √s=1.96  TeV using soft electron b-tagging. In: Physical Review. D, 2010, vol. 81, n° 09, p. 092002. https://archive-ouverte.unige.ch/unige:38657

200 hits

39 downloads

Update

Deposited on : 2014-07-14

Export document
Format :
Citation style :