@misc{10481/57640,
year = {2019},
month = {9},
url = {http://hdl.handle.net/10481/57640},
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.},
organization = {We acknowledge
the support of ANPCyT, Argentina; YerPhI, Armenia; ARC,
Australia; BMWFW and FWF, Austria; ANAS, Azerbaijan; SSTC,
Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada;
CERN; CONICYT, Chile; CAS,MOST and NSFC, China; COLCIENCIAS,
Colombia; MSMT CR, MPO CR and VSC CR, Czech Republic;
DNRF and DNSRC, Denmark; IN2P3-CNRS, CEA-DRF/IRFU,
France; SRNSFG, Georgia; BMBF, HGF, and MPG, Germany; GSRT,
Greece; RGC, Hong Kong SAR, China; ISF and Benoziyo Center,
Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; NWO,
Netherlands; RCN, Norway; MNiSW and NCN, Poland; FCT, Portugal;
MNE/IFA, Romania; MES of Russia and NRC KI, Russian Federation;
JINR;MESTD, Serbia; MSSR, Slovakia; ARRS andMIZŠ, Slovenia;
DST/NRF, South Africa; MINECO, Spain; SRC and Wallenberg
Foundation, Sweden; SERI, SNSF and Cantons of Bern and Geneva,
Switzerland; MOST, Taiwan; TAEK, Turkey; STFC, United Kingdom;
DOE and NSF, United States of America. In addition, individual groups
and members have received support from BCKDF, CANARIE, CRC
and Compute Canada, Canada; COST, ERC, ERDF, Horizon 2020, and
Marie Skłodowska-Curie Actions, European Union; Investissements d’
Avenir Labex and Idex, ANR, France; DFG and AvH Foundation, Germany;
Herakleitos,Thales and Aristeia programmes co-financed by EUESF
and the Greek NSRF, Greece; BSF-NSF and GIF, Israel; CERCA
Programme Generalitat de Catalunya, Spain; The Royal Society and
Leverhulme Trust, United Kingdom. The crucial computing support
from allWLCG partners is acknowledged gratefully, in particular from
CERN, theATLAS Tier-1 facilities at TRIUMF (Canada),NDGF(Denmark,
Norway, Sweden), CC-IN2P3 (France), KIT/GridKA (Germany),
INFN-CNAF (Italy), NL-T1 (Netherlands), PIC (Spain), ASGC (Taiwan),
RAL (UK) and BNL (USA), the Tier-2 facilities worldwide and
large non-WLCG resource providers.},
publisher = {Springer Nature},
title = {Search for excited electrons singly produced in proton–proton collisions at √ s = 13 TeV with the ATLAS experiment at the LHC},
doi = {10.1140/epjc/s10052-019-7295-1},
author = {Aaboud, M. and Aguilar Saavedra, Juan Antonio and Atlas Collaboration},
}