We report the measurements of the t (t) over bar production cross section and of the top quark mass using 1.02 fb(-1) of p (p) over bar data collected with the CDF II detector at the Fermilab Tevatron. We select events with six or more jets on which a number of kinematical requirements are imposed by means of a neural network algorithm. At least one of these jets must be identified as initiated by a b-quark candidate by the reconstruction of a secondary vertex. The cross section is measured to be sigma(t (t) over bar)=8.3 +/- 1.0(stat)(-1.5)(+2.0)X(syst)+/- 0.5(lumi) pb, which is consistent with the standard model prediction. The top quark mass of 174.0 +/- 2.2(stat)+/- 4.8(syst) GeV/c(2) is derived from a likelihood fit incorporating reconstructed mass distributions representative of signal and background. RI Ruiz, Alberto/E-4473-2011; Robson, Aidan/G-1087-2011; De Cecco, Sandro/B-1016-2012; St.Denis, Richard/C-8997-2012; Prokoshin, Fedor/E-2795-2012; Azzi, Patrizia/H-5404-2012

Measurement of the p(p)over-bar -> t(t)over-bar production cross section and the top quark mass at root s=1.96 TeV in the all-hadronic decay mode

MANCA, GIULIA;OLDEMAN, RUDOLF GERHARD CHRISTIAAN;
2007-01-01

Abstract

We report the measurements of the t (t) over bar production cross section and of the top quark mass using 1.02 fb(-1) of p (p) over bar data collected with the CDF II detector at the Fermilab Tevatron. We select events with six or more jets on which a number of kinematical requirements are imposed by means of a neural network algorithm. At least one of these jets must be identified as initiated by a b-quark candidate by the reconstruction of a secondary vertex. The cross section is measured to be sigma(t (t) over bar)=8.3 +/- 1.0(stat)(-1.5)(+2.0)X(syst)+/- 0.5(lumi) pb, which is consistent with the standard model prediction. The top quark mass of 174.0 +/- 2.2(stat)+/- 4.8(syst) GeV/c(2) is derived from a likelihood fit incorporating reconstructed mass distributions representative of signal and background. RI Ruiz, Alberto/E-4473-2011; Robson, Aidan/G-1087-2011; De Cecco, Sandro/B-1016-2012; St.Denis, Richard/C-8997-2012; Prokoshin, Fedor/E-2795-2012; Azzi, Patrizia/H-5404-2012
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11584/46507
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