Search for dark matter mediator in the production of three and four top quarks

TL;DR

This paper investigates how a scalar dark matter mediator influences the production of three and four top quarks at colliders, highlighting its potential detectability through current experimental capabilities.

Contribution

It calculates tree-level and one-loop contributions of a scalar mediator to multi-top production, demonstrating its significant impact within current experimental limits.

Findings

Dark matter mediator significantly affects three- and four-top production cross sections.

Current collider detectors can potentially reconstruct these rare events.

The study provides a pathway for future dark matter searches in top quark processes.

Abstract

In the context of simplified models of dark matter, the contributions of a scalar mediator to top quark production processes are considered. Tree-level and one-loop contributions of the mediator's decay into a top-antitop quark pair in two-, three-, and four-top quarks production processes are calculated. A significant contribution from diagrams involving the dark matter mediator is demonstrated in the total cross section for three- and four-top quark production processes, taking into account current experimental limits on model parameters. The perspective of searching for dark matter mediators in the processes under consideration is determined by the ability to reconstruct the final state with modern collider detectors and the experimental sensitivity that has already been achieved for such rare events.