Particle physics today faces the challenge of explaining the mystery of dark matter, the origin
of matter over anti-matter in the Universe, the origin of the neutrino masses, the apparent …

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 …

Searches for long-lived particles (LLPs) are among the most promising avenues for
discovering physics beyond the Standard Model at the Large Hadron Collider (LHC) …

A search for long-lived particles (LLPs) using 140 fb-1 of pp collision data with s= 13 TeV
recorded by the ATLAS experiment at the LHC is presented. The search targets LLPs with …

A bstract A search for decays of pair-produced neutral long-lived particles (LLPs) is
presented using 139 fb− 1 of proton-proton collision data collected by the ATLAS detector at …

Exotic decays of the Standard Model (SM)-like Higgs boson into beyond-the-SM particles
are predicted in a wide range of well-motivated theories. The enormous samples of Higgs …

A bstract We investigate the discovery potential for long-lived particles produced in
association with a top-antitop quark pair at the (High-Luminosity) LHC. Compared to …

Despite the fact that dark matter constitutes one of the cornerstones of the standard
cosmological paradigm, its existence has so far only been inferred from astronomical …

A bstract A search for long-lived particles decaying in the outer regions of the CMS silicon
tracker or in the calorimeters is presented. The search is based on a data sample of proton …

A bstract A search for long-lived particles (LLPs) produced in association with a Z boson is
presented. The study is performed using data from proton-proton collisions with a center-of …