Kovalev, A.I.
PBAR P --> TOP TOPBAR X
[1000.0, 7000.0]
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Measurement of the t anti-t production cross section in p anti-p collisions at s**(1/2) = 1.96-TeV using kinematic fitting of b-tagged lepton + jet events

The CDF collaboration Acosta, D. ; Adelman, J. ; Affolder, T. ; et al.
Phys.Rev.D 71 (2005) 072005, 2005.
Inspire Record 658758 DOI 10.17182/hepdata.41883

We report a measurement of the ttbar production cross section using the CDF II detector at the Fermilab Tevatron. The data consist of events with an energetic electron or muon, missing transverse energy, and three or more hadronic jets, at least one of which is identified as a b-quark jet by reconstructing a secondary vertex. The background fraction is determined from a fit of the transverse energy of the leading jet. Using 162+-10 /pb of data, the total cross section is found to be 6.0+-1.6(stat.)+-1.2(syst.) pb, which is consistent with the Standard Model prediction.

1 data table
Table 1

Cross section for different assumed TOP quark masses.


Measurement of the t anti-t production cross section in p anti-p collisions at s**(1/2) = 1.96-TeV using dilepton events

The CDF collaboration Acosta, D. ; Affolder, T. ; Akimoto, T. ; et al.
Phys.Rev.Lett. 93 (2004) 142001, 2004.
Inspire Record 649267 DOI 10.17182/hepdata.54901

We report a measurement of the ttbar production cross section using dilepton events with jets and missing transverse energy in ppbar collisions at a center-of-mass energy of 1.96 TeV. Using a 197 +/- 12 pb-1 data sample recorded by the upgraded Collider Detector at Fermilab, we use two complementary techniques to select candidate events. We compare the number of observed events and selected kinematical distributions with the predictions of the Standard Model and find good agreement. The combined result of the two techniques yields a ttbar production cross section of 7.0 +2.4/-2.1(stat.) +1.6/-1.1(syst.) +/- 0.4(lum.) pb.

1 data table
Table 1

Measured values of cross section for a top mass of 175 GeV. The second DSYS error is the uncertainty in the luminosity.