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 bstract A search is presented for a new, light boson with a mass of about 1 GeV and
decaying promptly to jets of collimated electrons and/or muons (lepton-jets). The analysis is …

A bstract The results of a search for charged Higgs bosons decaying to a τ lepton and a
neutrino, H±→ τ±ν, are presented. The analysis is based on 19.5 fb− 1 of proton-proton …

A bstract A search for dark matter produced in association with a Higgs boson in final states
with two hadronically decaying τ-leptons and missing transverse momentum is presented …

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 dataset recorded …

A bstract A search for charged Higgs bosons decaying into W±W±or W±Z bosons is
performed, involving experimental signatures with two leptons of the same charge, or three …

A search is performed for collimated muon pairs displaced from the primary vertex produced
in the decay of long-lived neutral particles in proton–proton collisions at s= 7 TeV centre-of …

A bstract A search for light long-lived neutral particles with masses in the O (MeV–GeV)
range is presented. The analysis targets the production of long-lived dark photons in the …

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 …

A bstract A search for exotic decays of the Higgs boson into a pair of spin-zero particles, H→
aa, where the a-boson decay sin to b-quarks promptly or with a mean proper lifetime cτ a up …