Beyond the Standard Model searches with top quarks at D0

TL;DR

This paper reports on various searches for physics beyond the Standard Model involving top quarks at the D0 detector, including resonance searches, Higgs and heavy boson production, and asymmetry measurements.

Contribution

It presents new experimental searches and measurements related to top quarks, exploring phenomena beyond the Standard Model at the Fermilab Tevatron.

Findings

Limits set on $tar{t}$ resonance production

Measurements of forward-backward charge asymmetry

Constraints on charged Higgs and heavy gauge bosons

Abstract

Due to its high mass and short lifetime, the top quark plays an important role in checking the Standard Model of particle physics. In this report, we pr\ esent a variety of searches for physics beyond the Standard Model, involving top quarks, at the D0 detector at the Fermilab Tevatron collider. Specifically, we present searches in top quark pair production, single top quark production and top quark decays. The search spectra discussed here involve a search for $t\bar{t}$ resonances, associated production of Higgs bosons and $t\bar{t}$, charged Higgs bosons and heavy gauge $W^{'}$ bosons. Furthermore, we measure the forward-backward charge asymmetry and a ratio of branching fractions.