Search for Displaced Leptons in $\sqrt{s}=13\text{ }\text{ }\mathrm{TeV}$ $pp$ Collisions with the ATLAS Detector

Open Access

Search for Displaced Leptons in $\sqrt{s} = 13 TeV$ $p p$ Collisions with the ATLAS Detector

G. Aad et al. (ATLAS Collaboration)

Phys. Rev. Lett. 127, 051802 – Published 27 July 2021

Abstract

A search for charged leptons with large impact parameters using $139 {fb}^{- 1}$ of $\sqrt{s} = 13 TeV$ $p p$ 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, 680, and $340 GeV$ , respectively, are excluded at 95% confidence level, drastically improving on the previous best limits from LEP.

Received 17 November 2020
Revised 3 March 2021
Accepted 11 June 2021

DOI:https://doi.org/10.1103/PhysRevLett.127.051802

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP³.