We examine the theoretical motivations for long-lived particle (LLP) signals at the LHC in a
comprehensive survey of standard model (SM) extensions. LLPs are a common prediction of …

This article is a pedagogical review of searches for long-lived particles at the LHC. It is
primarily aimed at experimentalists and theorists seeking to initiate and/or deepen their …

Abstract Particles beyond the Standard Model (SM) can generically have lifetimes that are
long compared to SM particles at the weak scale. When produced at experiments such as …

A search for the decay of neutral, weakly interacting, long-lived particles using data collected
by the ATLAS detector at the LHC is presented. The analysis in this paper uses 36.1 fb-1 of …

A bstract In this work, we propose a novel search strategy for new physics at the LHC that
utilizes calorimeter jets that (i) are composed dominantly of displaced tracks and (ii) have …

This is the Snowmass2021 Energy Frontier (EF) Beyond the Standard Model (BSM) report. It
combines the EF topical group reports of EF08 (Model-specific explorations), EF09 (More …

Abstract During LHC Run 2 (2015–2018) the ATLAS Level-1 topological trigger allowed
efficient data-taking by the ATLAS experiment at luminosities up to 2.1× 10 34 cm-2 s-1 …

This paper describes a search for pairs of neutral, long-lived particles decaying in the
ATLAS calorimeter. Long-lived particles occur in many extensions to the Standard Model …

A bstract Several models of physics beyond the Standard Model predict neutral particles that
decay into final states consisting of collimated jets of light leptons and hadrons (so-called …

A search for the decay of neutral, weakly interacting, long-lived particles using data collected
by the ATLAS detector at the LHC is presented. This analysis uses the full data set recorded …