Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/124222
Citations
Scopus Web of Science® Altmetric
?
?
Type: Journal article
Title: Search for displaced vertices of oppositely charged leptons from decays of long-lived particles in pp collisions at √s=13 TeV with the ATLAS detector
Other Titles: Search for displaced vertices of oppositely charged leptons from decays of long-lived particles in pp collisions at root s=13 TeV with the ATLAS detector
Author: Aad, G.
Abbott, B.
Abbott, D.C.
Abed Abud, A.
Abeling, K.
Abhayasinghe, D.K.
Abidi, S.H.
AbouZeid, O.S.
Abraham, N.L.
Abramowicz, H.
Abreu, H.
Abulaiti, Y.
Acharya, B.S.
Achkar, B.
Adachi, S.
Adam, L.
Adam Bourdarios, C.
Adamczyk, L.
Adamek, L.
Adelman, J.
et al.
Citation: Physics Letters B: Nuclear Physics and Particle Physics, 2020; 801:1-21
Publisher: Elsevier
Issue Date: 2020
ISSN: 0370-2693
1873-2445
Statement of
Responsibility: 
G. Aad, B. Abbott, D.C. Abbott, A. Abed Abud, K. Abeling ... Paul D. Jackson ... Martin White
Abstract: A search for long-lived particles decaying into an oppositely charged lepton pair, μμ, ee, or eμ, is presented using 32.8fb−1of ppcollision data collected at √s=13 TeV by the ATLAS detector at the LHC. Candidate leptons are required to form a vertex, within the inner tracking volume of ATLAS, displaced from the primary ppinteraction region. No lepton pairs with an invariant mass greater than 12 GeV are observed, consistent with the background expectations derived from data. The detection efficiencies for generic resonances with lifetimes (cτ) of 100–1000 mm decaying into a dilepton pair with masses between 0.1–1.0 TeV are presented as a function of pTand decay radius of the resonances to allow the extraction of upper limits on the cross sections for theoretical models. The result is also interpreted in a supersymmetric model in which the lightest neutralino, produced via squark–antisquark production, decays into + ′−ν( , ′=e, μ) with a finite lifetime due to the presence of R-parity violating couplings. Cross-section limits are presented for specific squark and neutralino masses. For a 700 GeV squark, neutralinos with masses of 50–500 GeV and mean proper lifetimes corresponding to cτvalues between 1mm to 6m are excluded. For a 1.6 TeV squark, cτvalues between 3mm to 1m are excluded for 1.3 TeV neutralinos.
Rights: © 2019 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3.
DOI: 10.1016/j.physletb.2019.135114
Published version: http://dx.doi.org/10.1016/j.physletb.2019.135114
Appears in Collections:Aurora harvest 8
Physics publications

Files in This Item:
File Description SizeFormat 
hdl_124222.pdfPublished version1.67 MBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.