Search for long-lived particles using displaced vertices of oppositely charged leptons in 140 fb${}^{-1}$ of pp collisions at $\sqrt{s}=13$ TeV with the ATLAS detector

ATLAS Collaboration

A search is presented for long-lived particles decaying into an oppositely charged lepton pair, ${\mu }^{+}{\mu }^{-}$, $e^{+}{e}^{-}$, or $e^{\pm }{\mu }^{\mp }$, that form a vertex within the inner…