Searches for New Physics in Top Events at the Tevatron

TL;DR

This paper reports on multiple searches for new physics phenomena in top quark events at the Tevatron collider, finding no deviations from the Standard Model and setting upper limits on potential new physics signals.

Contribution

It presents the final results of several top physics searches at the Tevatron, including resonance and Lorentz invariance violation tests, with new upper limits established.

Findings

No evidence of new physics observed in top events.

Upper limits set on resonance production and Lorentz invariance violation.

Results constrain models beyond the Standard Model.

Abstract

Recent results of searches for new physics in top events at the Tevatron are presented. In case of CDF three searches are discussed using 6.0 to 8.7 fb^{-1} of data, with the latter being the final CDF data sample available for this kind of analysis. CDF carried out a search for Top + jet resonance production, dark matter production in association with single top and boosted tops. No signs of new physics are observed and instead upper limits are derived. D{\O} used 5.3 fb^{-1} of data and searched for a narrow resonance in ttbar production and a time dependent ttbar cross section, which would reveal a violation of Lorentz invariance. However, no signs for deviations from Standard Model are seen and instead upper limits for non-Standard Model contributions are calculated.