Exploring the hadronic landscape, a novel search in multijet events at the ATLAS experiment

TL;DR

This paper presents a novel search for new physics beyond the Standard Model in all-hadronic multijet events at the ATLAS experiment, exploring less constrained final states to identify potential signals of new phenomena.

Contribution

It introduces a new analysis targeting multijet final states with minimal missing energy, expanding the search for BSM physics beyond traditional approaches.

Findings

Set new limits on BSM models in multijet final states

Demonstrated the sensitivity of the ATLAS detector to complex hadronic signatures

Provided constraints on theories predicting high-multiplicity jet events

Abstract

The exceptionally accurate Standard Model (SM) theory of fundamental interactions is known to be incomplete. Many new theories extend the SM, trying to solve some of the most compelling puzzles of nature. Since the start of LHC experiments, a wide range of the accessible phase space has been explored, setting robust limits on new physics. Yet, many alternative models offering less constrained final states are to be evaluated. A new search for Beyond Standard Model (BSM) physics at the ATLAS experiment in an all-hadronic final state with many jets and minimal missing energy is presented. These proceedings follow a presentation at Moriond Electroweak 2024 and published results 2401.16333.