Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/123651
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Type: Journal article
Title: Search for excited electrons singly produced in proton–proton collisions at √s = 13Te with the ATLAS experiment at the LHC
Other Titles: Search for excited electrons singly produced in proton-proton collisions at root s = 13Te with the ATLAS experiment at the LHC
Author: Aaboud, M.
Aad, G.
Abbott, B.
Abbott, D.
Abdinov, O.
Abeloos, B.
Abhayasinghe, D.
Abidi, S.
AbouZeid, O.
Abraham, N.
Abramowicz, H.
Abreu, H.
Abulaiti, Y.
Acharya, B.
Adachi, S.
Adam, L.
Bourdarios, C.
Adamczyk, L.
Adamek, L.
Adelman, J.
et al.
Citation: European Physical Journal C, 2019; 79(9):803-1-803-30
Publisher: Springer Nature
Issue Date: 2019
ISSN: 1434-6044
1434-6052
Statement of
Responsibility: 
M. Aaboud … A. Duvnjak … P. Jackson … J.L. Oliver … A. Petridis … A. Qureshi … A.S. Sharma … M.J. White … et al. [The ATLAS Collaboration]
Abstract: A search for excited electrons produced in pp collisions at s√ = 13 TeV via a contact interaction qq¯→ee* is presented. The search uses 36.1 fb⁻¹ of data collected in 2015 and 2016 by the ATLAS experiment at the Large Hadron Collider. Decays of the excited electron into an electron and a pair of quarks (eqq¯) are targeted in final states with two electrons and two hadronic jets, and decays via a gauge interaction into a neutrino and a W boson (νW) are probed in final states with an electron, missing transverse momentum, and a large-radius jet consistent with a hadronically decaying W boson. No significant excess is observed over the expected backgrounds. Upper limits are calculated for the pp→ee*→eeqq¯ and pp→ee*→eνW production cross sections as a function of the excited electron mass me* at 95% confidence level. The limits are translated into lower bounds on the compositeness scale parameter Λ of the model as a function of me*. For me*<0.5 TeV, the lower bound for Λ is 11 TeV. In the special case of me*=Λ, the values of me∗<4.8 TeV are excluded. The presented limits on Λ are more stringent than those obtained in previous searches.
Rights: © CERN for the benefit of the ATLAS collaboration 2019. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Funded by SCOAP³.
RMID: 1000002082
DOI: 10.1140/epjc/s10052-019-7295-1
Appears in Collections:Physics publications

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