Search for Physics beyond the Standard Model in four- and three-top quark production

TL;DR

This paper reinterprets four-top quark production data from CMS Run 2 to search for physics beyond the Standard Model, setting limits on new physics scenarios involving EFT operators, heavy resonances, and top-Yukawa coupling.

Contribution

It introduces a novel reinterpretation of existing four-top data to constrain multiple BSM models and EFT operators, enhancing the sensitivity of multi-top final states.

Findings

Set competitive limits on BSM models

Demonstrated sensitivity to a wide range of effects

Provided constraints on EFT operators and heavy resonances

Abstract

A reinterpretation of four-top quark ($t\bar{t}t\bar{t}$) production is presented using the full Run 2 dataset recorded by the CMS experiment, corresponding to an integrated luminosity of 138 fb$^{-1}$. The analysis targets BSM scenarios using the existing $t\bar{t}t\bar{t}$ production measurement, including constraints on effective field theory (EFT) operators, top-philic heavy resonances, and the top-Yukawa coupling. The results provide competitive limits on several new physics models and demonstrate the sensitivity of multi-top final states to a wide range of BSM effects.