%0 Journal Article
%T Measurement of the t(t)over-bar production cross section in p(p)over-bar collisions at root s=1.96 TeV using soft electron b-tagging
%A CDF Collaboration (Aaltonen, T. et al
%A Cabrera, S.
%A Cuenca Almenar, C.
%J Physical Review D
%D 2010
%V 81
%N 9
%I Amer Physical Soc
%@ 1550-7998
%G English
%F CDFCollaborationAaltonen_etal2010
%O ISI:000278145100006
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=286), last updated on Mon, 21 Feb 2011 12:24:41 +0000
%X We present a measurement of the top-quark pair-production cross section in p (p) over bar collisions at root 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 t (t) over bar events in the lepton + jets channel, consisting of e nu + jets and μnu + 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 sigma(t (t) over bar) = 7.8 +/- 2.4(stat) +/- 1.6(syst) +/- 0.5(lumi) pb. We assume a top-quark mass of 175 GeV/c(2). This is the first measurement of the t (t) over bar cross section with soft electron tags in run II of the Tevatron.
%R 10.1103/PhysRevD.81.092002
%U http://arXiv.org/abs/1002.3783
%U https://doi.org/10.1103/PhysRevD.81.092002
%P 092002-18pp