Search for displaced leptons in $\sqrt{s} = 13$ TeV $pp$ collisions with the 
ATLAS detector

ATLAS Collaboration,

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Search for displaced leptons in $\sqrt{s} = 13$ TeV $pp$ collisions with the ATLAS detector

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ATLAS Collaboration,
Max Planck Institute for Physics, Max Planck Society and Cooperation Partners;

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Citation

ATLAS Collaboration (2021). Search for displaced leptons in $\sqrt{s} = 13$ TeV $pp$ collisions with the ATLAS detector. Physical Review Letters, 127, 051802. Retrieved from https://publications.mppmu.mpg.de/?action=search&mpi=MPP-2020-206.

Cite as: https://hdl.handle.net/21.11116/0000-000A-1AFE-C

Abstract

A search for charged leptons with large impact parameters using 139 fb$^{-1}$ of $\sqrt{s} = 13$ TeV $pp$ collision 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 lifetimes of 0.1 ns, selectron, smuon and stau masses up to 720 GeV, 680 GeV, and 340 GeV are respectively excluded at 95% confidence level, drastically improving on the previous best limits from LEP.