CERN Accelerating science

ATLAS Note
Report number	ATLAS-CONF-2020-051
Title	Search for displaced leptons in $\sqrt{s} = 13$ TeV pp collisions with the ATLAS detector
Corporate Author(s)	The ATLAS collaboration
Collaboration	ATLAS Collaboration
Publication	2020
Imprint	06 Oct 2020
Number of pages	mult.
Note	All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/CONFNOTES/ATLAS-CONF-2020-051
In:	5th International Conference on Particle Physics and Astrophysics (ICPPA)
Subject category	Particle Physics - Experiment
Accelerator/Facility, Experiment	CERN LHC ; ATLAS
Abstract	A search for charged leptons with large impact parameters using 139 fb$^{-1}$ of $\sqrt{s} = 13$ TeV $pp$ data from the ATLAS detector at the LHC is presented, addressing a long-standing gap in coverage of possible new physics signatures. Results are consistent with the background prediction. This search provides unique sensitivity to long-lived scalar supersymmetric lepton-partners (sleptons). For 0.1 ns lifetimes selectron, smuon and stau masses up to 720 GeV, 680 GeV, and 340 GeV are excluded, respectively, at 95% CL drastically improving on the previous best limits from LEP.
Related document	superseded by: CERN-EP-2020-205

Corresponding record in: Inspire