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arXiv · 1201.5291

Measurement of the ttbar production cross section in the fully hadronic decay channel in pp collisions at 7 TeV

A. Tropiano
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Abstract

The first measurement of the top quark pair production cross section in the fully hadronic channel at a center-of-mass energy of $\sqrt s = 7$ TeV is presented. The measurement has been performed using an integrated luminosity of 1.09 fb$^{-1}$, collected with the CMS detector. The reconstruction of the $t\bar t$ candidates is performed after a cut-based event selection using a kinematic fit. A data-driven technique is used to estimate the dominant background from QCD multijet production. The cross section is determined from a fit to the top quark mass. The cross section measurement yields $σ(t\bar t)=136 \pm 20 (stat.) \pm 40 (sys.) \pm 8 (lumi.)$ pb. This result is consistent with an independent measurement in the same channel, with the measurements in other decay channels and with the Standard Model predictions.

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A. Tropiano. 2012-01-25. Measurement of the ttbar production cross section in the fully hadronic decay channel in pp collisions at 7 TeV. https://doi.org/10.1051/epjconf%2F20122812042

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