Measurement of the Forward-Backward Charge Asymmetry in Top-Quark Pair Production in Proton-Antiproton Collisions at D0

TL;DR

This paper measures the forward-backward charge asymmetry in top-antitop quark production at the Fermilab Tevatron, providing insights into potential new physics beyond the Standard Model.

Contribution

It presents the first measurement of the asymmetry in different jet multiplicities using 0.9 fb^{-1} of data from the D0 experiment.

Findings

Measured asymmetry values for various jet multiplicities.

Set upper limits on tar{t} production via heavy Z' bosons.

Results are sensitive to new physics scenarios.

Abstract

A measurement of the forward-backward charge asymmetry in top-antitop (t\bar{t}) pair production in proton-antiproton (p\bar{p}) collisions is presented. The asymmetry is measured for different jet multiplicities in the lepton+jets final state on 0.9 fb^{-1} of data collected by the D0 experiment at the Fermilab Tevatron Collider. The result is sensitive to new physics, which is demonstrated by setting an upper limit on t\bar{t} production via heavy neutral gauge bosons (Z^{\prime}).