Search for excited electrons singly produced in proton–proton collisions at √s=13Te with the ATLAS experiment at the LHC

ATLAS Collaboration

doi:10.1140/epjc/s10052-019-7295-1

Search for excited electrons singly produced in proton–proton collisions at √s=13Te with the ATLAS experiment at the LHC

ATLAS Collaboration

University Politehnica of Bucharest
Université Ibn-Tofail
European Organization for Nuclear Research
Dep Física and CEFITEC of Faculdade de Ciências e Tecnologia
New University of Lisbon
University Mohammed I
Aix-Marseille Université
University of Oklahoma
University of Massachusetts Amherst
University of Adelaide
Azerbaijan Academy of Sciences
Laboratoire de l'Accélérateur Linéaire
University of London
University of Toronto
Niels Bohr Institutet
University of Sussex
Tel Aviv University
Technion - Israel Institute of Technology
Argonne National Laboratory
Sezione INFN di Roma La Sapienza
ICTP
University of Tokyo
Johannes Gutenberg University
Univ of Mining and Metallurgy
USA
University of Munich
Bogazici University
Rutherford Appleton Laboratory
University of California at Santa Cruz
'Al. I. Cuza' University
Laboratório de Instrumentacão e Física Experimental de Partículas
University of Granada
Joint Inst. for Nuclear Research
INFN Sezione di Roma Tor Vergata
University of Rome Tor Vergata
Kyoto University
Lund University
University of Geneva
P.N. Lebedev Physical Institute of the Russian Academy of Sciences
DIBINEM, Alma Mater Studiorum, University of Bologna
Istituto Nazionale di Fisica Nucleare, Sezione di Bologna
University of Victoria
Universidad Nacional de la Plata
Radboud University Nijmegen
Horia Hulubei National Institute of Physics and Nuclear Engineering
Humboldt-Universität zu Berlin
National Technical University of Athens
Czech Technical University in Prague
INFN Sezione di Milano
University of Chicago
University of Washington
New York University
University of Sheffield
University of Oregon
University of Birmingham
INFN Sezione di Napoli
Università di Napoli Federico II
University of Glasgow
University of Valencia
Federal University of Rio de Janeiro
McGill University and Génome Québec Innovation Centre
University of Oxford
Brandeis University
University of Michigan, Ann Arbor
Coimbra University Pó lo II
Deutsches Elektronen-Synchrotron (DESY)
Iowa State University
University Paris-Sud
University of Texas at Austin
Heidelberg University
University of Bern
University of Milan
CNRS/IN2P3 and Université Paris 11
University of Amsterdam
Columbia University
Novosibirsk State University
SNS and INFN
INFN, Laboratori Nazionali Di Frascati
University of California, Irvine
High Energy Accelerator Research Organization (KEK)
Michigan State University
Duke University
Université de Montréal
Iowa University
Queen Mary University of London
ITEP
Broad Institute of Harvard University
Uppsala University
Brookhaven National Laboratory
Comenius University
University of Cape Town
University of Illinois at Urbana-Champaign
University of Siegen
University of Science and Technology of China
Institute of High Energy Physics Chinese Academy of Science
York University
Istituto Nazionale di Fisica Nucleare, Sezione di Lecce
University of Salento
Stockholm University
Oskar Klein Centre
Universita La Sapienza
Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences
Simon Fraser University
Yale University
University of Texas at Arlington
University of Sydney
Weizmann Institute of Science Israel
University of Bonn
University of Wisconsin-Madison
Bergische Universität Wuppertal
University of Melbourne
University of Genova
Sezione INFN di Genova
Max-Planck-Institut für Physik
Stanford University
Shanghai Jiao Tong University
Lawrence Berkeley National Laboratory
Universidad Autónoma de Madrid
Department of Physics, Lancaster University
University Mohammed V in Rabat
University of Cambridge
California State University
Ohio State University
Centre de Recherche Institut du Cerveau et de la Moelle
Tufts University
Georg August Universität Göttingen
University of Freiburg
University of Gaziantep
Bahcesehir University
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Medical University Innsbruck
University College London
Carleton University
University of Athens
National Research Nuclear University MEPhI
Hassan II University of Casablanca
University of Grenoble Alpes
University of Arizona
University of Manchester
University of Pittsburgh
University of Pisa
Technische Universität Dresden
Boston University
Pontificia Universidad Católica de Chile
Moscow State University
University of Liverpool
Institute for High Energy Physics (IHEP)
Dept. d'Estructura I Constituents De La Matèria and IFAE
University of Buenos Aires
University of Johannesburg
Tokyo Metropolitan University
Universidad Técnica Federico Santa María
Institute of Experimental Physics Slovak Academy of Sciences
University of Bergen
University of Oslo
pro3dure medical GmbH
Academia Sinica Taipei
University at Albany
Ankara University School of Medicine
Indiana University Bloomington
Oklahoma State University
Universite della Calabria
Charles University
PT Government Associated Laboratory, University of Minho
Istanbul Bilgi University
Sez. di Roma Tre
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Nanjing University
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Kobe University
Chinese University of Hong Kong
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Aristotle University of Thessaloniki
Institute of Physics of the Czech Academy of Sciences
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University of Edinburgh
Univ.́ degli Studi di Udine
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Southern Methodist University
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University of São Paulo
Justus-Liebig-Universität Gießen
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National Research Centre "Kurchatov Institute"
Istituto Nazionale di Fisica Nucleare, Sezione di Pavia
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INFN-TIFPA
University of Trento
Nagasaki Institute of Applied Science
University of Alberta
University of Lisboa
West University in Timisoara
University of New Mexico
Tsukuba University
University of Würzburg
Natl. Academy of Sciences of Belarus
Shinshu University
University of the Witwatersrand, Johannesburg
Osaka University
Nagoya University
Institute for Nuclear Problems of the Belarus State University
Tokyo Institute of Technology
University of Texas at Dallas
Javakhishvili Tbilisi State University
Waseda University
Kyushu University
Tomsk State University
Ochanomizu University
University of Belgrade
Istanbul Aydin University (IAU)
Hong Kong University of Science and Technology
University of Hong Kong
Universidad Antonio Nariño
Center for Autonomous Systems
Centro de Física Nuclear Universidade de Lisboa
A.I. Alikhanyan National Science Laboratory (YerPhi)
Hiroshima Institute of Technology
Okayama University
Jagiellonian University
National Institute for R&D of Isotopic and Molecular Technologies
Louisiana Tech University
TOBB University of Economics and Technology
Kyoto University of Education
Transilvania University of Brasov

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12 Scopus citations

Abstract

A search for excited electrons produced in pp collisions at s = 13 Te 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 Te, the lower bound for Λ is 11 Te. In the special case of me∗=Λ, the values of me∗<4.8 Te are excluded. The presented limits on Λ are more stringent than those obtained in previous searches.

Original language	English
Article number	803
Journal	European Physical Journal C
Volume	79
Issue number	9
DOIs	https://doi.org/10.1140/epjc/s10052-019-7295-1
State	Published - 1 Sep 2019
Externally published	Yes

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10.1140/epjc/s10052-019-7295-1

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@article{da480b488fc747ad90e9424aed59be12,

title = "Search for excited electrons singly produced in proton–proton collisions at √s=13Te with the ATLAS experiment at the LHC",

abstract = "A search for excited electrons produced in pp collisions at s = 13 Te 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 Te, the lower bound for Λ is 11 Te. In the special case of me∗=Λ, the values of me∗<4.8 Te are excluded. The presented limits on Λ are more stringent than those obtained in previous searches.",

author = "\{ATLAS Collaboration\} and M. Aaboud and G. Aad and B. Abbott and Abbott, \{D. C.\} and O. Abdinov and B. Abeloos and Abhayasinghe, \{D. K.\} and Abidi, \{S. H.\} and AbouZeid, \{O. S.\} and Abraham, \{N. L.\} and H. Abramowicz and H. Abreu and Y. Abulaiti and Acharya, \{B. S.\} and S. Adachi and L. Adam and Bourdarios, \{C. Adam\} and L. Adamczyk and L. Adamek and J. Adelman and M. Adersberger and A. Adiguzel and T. Adye and Affolder, \{A. A.\} and Y. Afik and C. Agapopoulou and C. Agheorghiesei and Aguilar-Saavedra, \{J. A.\} and F. Ahmadov and G. Aielli and S. Akatsuka and {\AA}kesson, \{T. P.A.\} and E. Akilli and Akimov, \{A. V.\} and Alberghi, \{G. L.\} and J. Albert and Verzini, \{M. J.Alconada\} and S. Alderweireldt and M. Aleksa and Aleksandrov, \{I. N.\} and C. Alexa and D. Alexandre and T. Alexopoulos and M. Alhroob and B. Ali and G. Alimonti and J. Alison and Alkire, \{S. P.\} and L. Heinrich and E. Kourlitis",

note = "Publisher Copyright: {\textcopyright} 2019, CERN for the benefit of the ATLAS collaboration.",

year = "2019",

month = sep,

day = "1",

doi = "10.1140/epjc/s10052-019-7295-1",

language = "English",

volume = "79",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Springer Nature",

number = "9",

}

TY - JOUR

T1 - Search for excited electrons singly produced in proton–proton collisions at √s=13Te with the ATLAS experiment at the LHC

AU - ATLAS Collaboration

AU - Aaboud, M.

AU - Aad, G.

AU - Abbott, B.

AU - Abbott, D. C.

AU - Abdinov, O.

AU - Abeloos, B.

AU - Abhayasinghe, D. K.

AU - Abidi, S. H.

AU - AbouZeid, O. S.

AU - Abraham, N. L.

AU - Abramowicz, H.

AU - Abreu, H.

AU - Abulaiti, Y.

AU - Acharya, B. S.

AU - Adachi, S.

AU - Adam, L.

AU - Bourdarios, C. Adam

AU - Adamczyk, L.

AU - Adamek, L.

AU - Adelman, J.

AU - Adersberger, M.

AU - Adiguzel, A.

AU - Adye, T.

AU - Affolder, A. A.

AU - Afik, Y.

AU - Agapopoulou, C.

AU - Agheorghiesei, C.

AU - Aguilar-Saavedra, J. A.

AU - Ahmadov, F.

AU - Aielli, G.

AU - Akatsuka, S.

AU - Åkesson, T. P.A.

AU - Akilli, E.

AU - Akimov, A. V.

AU - Alberghi, G. L.

AU - Albert, J.

AU - Verzini, M. J.Alconada

AU - Alderweireldt, S.

AU - Aleksa, M.

AU - Aleksandrov, I. N.

AU - Alexa, C.

AU - Alexandre, D.

AU - Alexopoulos, T.

AU - Alhroob, M.

AU - Ali, B.

AU - Alimonti, G.

AU - Alison, J.

AU - Alkire, S. P.

AU - Heinrich, L.

AU - Kourlitis, E.

PY - 2019/9/1

Y1 - 2019/9/1

N2 - A search for excited electrons produced in pp collisions at s = 13 Te 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 Te, the lower bound for Λ is 11 Te. In the special case of me∗=Λ, the values of me∗<4.8 Te are excluded. The presented limits on Λ are more stringent than those obtained in previous searches.

AB - A search for excited electrons produced in pp collisions at s = 13 Te 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 Te, the lower bound for Λ is 11 Te. In the special case of me∗=Λ, the values of me∗<4.8 Te are excluded. The presented limits on Λ are more stringent than those obtained in previous searches.

UR - https://www.scopus.com/pages/publications/85073185035

U2 - 10.1140/epjc/s10052-019-7295-1

DO - 10.1140/epjc/s10052-019-7295-1

M3 - Article

AN - SCOPUS:85073185035

SN - 1434-6044

VL - 79

JO - European Physical Journal C

JF - European Physical Journal C

IS - 9

M1 - 803

ER -

Search for excited electrons singly produced in proton–proton collisions at √s=13Te with the ATLAS experiment at the LHC

Abstract

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