scholarly journals Measurement of the tt¯ production cross section in pp¯ collisions at s=1.96 TeV using lepton+jets events with lifetime b-tagging

2005 ◽  
Vol 626 (1-4) ◽  
pp. 35-44 ◽  
Author(s):  
V.M. Abazov ◽  
B. Abbott ◽  
M. Abolins ◽  
B.S. Acharya ◽  
M. Adams ◽  
...  
2005 ◽  
Vol 20 (14) ◽  
pp. 3180-3182
Author(s):  
Henri Bachacou

We present measurements of the [Formula: see text] production cross section in b-tagged lepton + jets events from [Formula: see text] collisions at 1.96 TeV using the CDF detector at Fermilab. B-jets are tagged with either a secondary vertex algorithm, or a soft lepton tagger that identifies muons from B hadron semileptonic decays. With Tevatron Run II data, we estimate the [Formula: see text] signal fraction in two different ways: by estimating the various background contributions, and by fitting directly the leading jet transverse energy spectrum for the signal and background contributions. A subset of the sample, with two secondary vertex tagged jets, yields a production cross section consistent with the inclusive measurements. Results are consistent with a Standard Model [Formula: see text] signal and current measurements of the top quark mass.


2005 ◽  
Vol 20 (14) ◽  
pp. 3177-3179
Author(s):  
◽  
TOBIAS GOLLING

A measurement of the [Formula: see text] production cross-section at [Formula: see text] with the DØ detector at the Fermilab Tevatron, based on the application of a multivariate topological method is presented. The integrated luminosity corresponds to 143.9 pb-1 in the μ+jets and 141.2 pb-1 in the e+jets channel. The preliminary cross-section is measured to be [Formula: see text].


2005 ◽  
Vol 626 (1-4) ◽  
pp. 45-54 ◽  
Author(s):  
V.M. Abazov ◽  
B. Abbott ◽  
M. Abolins ◽  
B.S. Acharya ◽  
M. Adams ◽  
...  

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