Measurement of the Top Quark Mass and $p\bar{p}$ -> $t\bar{t}$ Cross Section in the All-Hadronic Mode with the CDFII Detector - INSPIRE

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Measurement of the Top Quark Mass and $p\bar{p}$ -> $t\bar{t}$ Cross Section in the All-Hadronic Mode with the CDFII Detector

CDF

Collaboration

Feb, 2010

21 pages

Published in:

Phys.Rev.D 81 (2010) 052011

e-Print:

1002.0365 [hep-ex]

DOI:

10.1103/PhysRevD.81.052011

PDG:

{{\mathit t}}

-Quark Mass (Direct Measurements)

Report number:

FERMILAB-PUB-10-023-E

Experiments:

FNAL-E-0830

View in:

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Abstract: (arXiv)

We present a measurement of the top quark mass and of the top-antitop pair production cross section using p-pbar data collected with the CDFII detector at the Tevatron Collider at the Fermi National Accelerator Laboratory and corresponding to an integrated luminosity of 2.9 fb-1. We select events with six or more jets satisfying a number of kinematical requirements imposed by means of a neural network algorithm. At least one of these jets must originate from a b quark, as identified by the reconstruction of a secondary vertex inside the jet. The mass measurement is based on a likelihood fit incorporating reconstructed mass distributions representative of signal and background, where the absolute jet energy scale (JES) is measured simultaneously with the top quark mass. The measurement yields a value of 174.8 +- 2.4(stat+JES) ^{+1.2}_{-1.0}(syst) GeV/c^2, where the uncertainty from the absolute jet energy scale is evaluated together with the statistical uncertainty. The procedure measures also the amount of signal from which we derive a cross section, sigma_{ttbar} = 7.2 +- 0.5(stat) +- 1.0 (syst) +- 0.4 (lum) pb, for the measured values of top quark mass and JES.

Note:

Submitted to Phys. Rev. D

13.85.Ni
14.65.Ha
13.85.Qk
OSG : CDF
anti-p p: interaction
top: mass
Batavia TEVATRON Coll
top: pair production
mass spectrum
final state: ((n)jet)

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