Top quark production cross-section at the Tevatron Run 2

TL;DR

This paper reports measurements of the top quark pair production cross-section at the Tevatron Run 2, confirming consistency with theoretical predictions and establishing the presence of top signals in the data.

Contribution

First measurements of top quark pair production cross-section at 1.96 TeV in Run 2 data, confirming agreement with NLO predictions and reestablishing the top signal.

Findings

Measured cross-section agrees with NLO predictions

Top signal presence confirmed in Tevatron data

Consistent results in dilepton and lepton plus jets channels

Abstract

The top quark pair production cross-section ${\sigma}_{t\bar{t}}$ has been measured in $p\bar{p}$ collisions at center of mass energies of 1.96 TeV using Tevatron Run 2 data. In the begining of Run 2 both CDF and D\O\ $\sigma_{t\bar{t}}$ measurements in the {\it dilepton} channel $t\bar{t}{\to}WbW\bar{b}{\to}\bar{\ell}{\nu}_{\ell}b{\ell}^{'}\ bar{\nu}_{{\ell}^{'}}\bar{b}$ and in the {\it lepton plus jets} channel $t\bar{t}{\to}WbW\bar{b}{\to}q\bar{q}^{'}b{\ell}\bar{\nu}_{\ell }\bar{b}+\bar{\ell}{\nu}_{\ell}bq\bar{q}^{'}\bar{b}$ agree with the NLO (Next-to-Leading-Order) theoretical predictions. The presence of a top signal in Tevatron data has been reestablished.