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

Aad, Georges; Abbott, Brad; Abbott, Dale Charles; Abed Abud, Adam; Abeling, Kira; Abhayasinghe, Deshan Kavishka; Abidi, Syed Haider; Abouzeid, Ossama; Abraham, Nicola; Abramowicz, Halina

doi:10.1103/PhysRevLett.127.051802

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

ATLAS

Collaboration

Nov 16, 2020

21 pages

Published in:

Phys.Rev.Lett. 127 (2021) 5, 051802

Published: Jul 27, 2021

e-Print:

2011.07812 [hep-ex]

DOI:

10.1103/PhysRevLett.127.051802 (publication)

PDG: Long-Lived Particle (LLP) Search at Hadron Collisions

Report number:

CERN-EP-2020-205

Experiments:

CERN-LHC-ATLAS

View in:

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reference search81 citations

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Abstract: (APS)

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.

Note:

29 pages in total, author list starting page 14, 2 figures, 1 table, submitted to PRL. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/SUSY-2018-14

p p: scattering
p p: colliding beams
new physics: signature
new physics: search for
stau: mass: lower limit
lepton: transverse momentum
ATLAS
lepton: impact parameter
final state: (dilepton)
CERN LHC Coll

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