Measurement of the ttbar cross section using high-multiplicity jet events

TL;DR

This paper reports a measurement of the top-antitop quark pair production cross section using high-multiplicity jet events at the Fermilab Tevatron, finding results consistent with theoretical predictions.

Contribution

First measurement of the ttbar cross section using events with at least six jets and two b-tags at the Tevatron.

Findings

Measured cross section: 6.9 ± 2.0 pb

Results agree with theoretical expectations

Used 1 fb-1 of data from D0 detector

Abstract

We present a measurement of the ttbar cross section using high-multiplicity jet events produced in ppbar collisions at sqrt{s}=1.96 TeV. These data were recorded at the Fermilab Tevatron collider with the D0 detector. Events with at least six jets, two of them identified as b jets, were selected from a 1 fb-1 data set. The measured cross section, assuming a top quark mass of 175 GeV/c^2, is 6.9 \pm 2.0 pb, in agreement with theoretical expectations.