This report presents a comprehensive collection of searches for new physics performed by
the ATLAS Collaboration during the Run 2 period of data taking at the Large Hadron …

This report, as part of the 2021 Snowmass Process, summarizes the current status of collider
physics at the Energy Frontier, the broad and exciting future prospects identified for the …

Semi-visible jets, with a significant contribution to the event's missing transverse momentum,
can arise in strongly interacting dark sectors. This results in an event topology where one of …

A bstract This paper presents a search for a new Z′ resonance decaying into a pair of dark
quarks which hadronise into dark hadrons before promptly decaying back as Standard …

We delve deeper into the potential composition of dark matter as stable scalar glueballs from
a confining dark SU (N) gauge theory, focusing on N={3, 4, 5}. To predict the relic …

A bstract We study confining dark sectors where the lightest hadrons are glueballs. Such
models can provide viable dark matter candidates and appear in some neutral naturalness …

A bstract This study introduces a novel Graph Neural Network (GNN) architecture that
leverages infrared and collinear (IRC) safety and equivariance to enhance the analysis of …

We provide the first determination of the mass of the lightest flavor-singlet pseudoscalar and
scalar bound states (mesons) in the Sp (4) Yang-Mills theory coupled to two flavors of …

Astrophysical observations provide compelling evidence for gravitationally interacting dark
matter in the universe that cannot be explained by the standard model of particle physics …

A bstract A strongly interacting dark sector can give rise to a class of signatures dubbed dark
showers, where in analogy to the strong sector in the Standard Model, the dark sector …