Search for charged-lepton-flavor violating 𝜇⁢𝜏⁢𝑞⁢𝑡 interactions in top-quark production and decay in 𝑝⁢𝑝 collisions at √𝑠=13  TeV with the ATLAS detector at the LHC

ATLAS Collaboration

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

A search for charged-lepton-flavor violating Formula Presented (Formula Presented, Formula Presented) interactions is presented, considering both top-quark production and decay. The data analyzed correspond to Formula Presented of proton-proton collisions at a center-of-mass energy of Formula Presented recorded with the ATLAS detector at the Large Hadron Collider. The analysis targets events containing two muons with the same electric charge, a hadronically decaying Formula Presented-lepton and at least one jet, with exactly one Formula Presented-tagged jet, produced by a Formula Presented interaction. Agreement with the Standard Model expectation within 1.6 standard deviations is observed, and limits are set at the 95% confidence level (CL) on the charged-lepton-flavor violation branching ratio of Formula Presented. An effective field theory interpretation is performed yielding 95% CL limits on Wilson coefficients, dependent on the flavor of the associated light quark and the Lorentz structure of the coupling. These range from Formula Presented for Formula Presented to Formula Presented for Formula Presented. An additional interpretation is performed for scalar leptoquark production inducing charged-lepton-flavor violation, with fixed intergenerational couplings. Upper limits on leptoquark coupling strengths are set at the 95% CL, ranging from Formula Presented to Formula Presented for leptoquark masses between 0.5 and 2.0 TeV.

Original languageEnglish
Article number012014
JournalPhysical Review D
Volume110
Issue number1
DOIs
StatePublished - 1 Jul 2024

Funding

FundersFunder number
BSF-NSF
Australian Research Council
La Caixa Banking Foundation
Centre National pour la Recherche Scientifique et Technique
Fundação para a Ciência e a Tecnologia
Cooperative Research Centres, Australian Government Department of Industry
National Stroke Foundation
CEA-DRF
Science and Technology Facilities Council
Horizon 2020, ICSC-NextGenerationEU
H2020 Marie Skłodowska-Curie Actions
INFN-CNAF
Nederlandse Organisatie voor Wetenschappelijk Onderzoek
Ministry of Science and Technology, Taiwan
Israel Science Foundation
Wallenberg Foundation
Leverhulme Trust
Baden-Württemberg Stiftung
PROMETEO
Neubauer Family Foundation
Staatssekretariat für Bildung, Forschung und Innovation
Javna Agencija za Raziskovalno Dejavnost RS
Generalitat de Catalunya
Instituto Nazionale di Fisica Nucleare
Bundesministerium für Wissenschaft, Forschung und Wirtschaft
Austrian Science Fund
Agencia Nacional de Investigación y Desarrollo
Bundesministerium für Bildung und Forschung
Helmholtz-Gemeinschaft
Danmarks Grundforskningsfond
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Karlsruhe Institute of Technology
Canarie
GridKA
Göran Gustafssons Stiftelser
MIZŠ
European Commission
Ministarstvo Prosvete, Nauke i Tehnološkog Razvoja
U.S. Department of Energy
European Cooperation in Science and Technology
EU-ESF
International Council of Shopping Centers
RGC
Fundação de Amparo à Pesquisa do Estado de São Paulo
Institutul de Fizică Atomică
Natural Sciences and Engineering Research Council of Canada
Nella and Leon Benoziyo Center for Neurological Diseases, Weizmann Institute of Science
GenT Programmes Generalitat Valenciana, Spain
Irish Rugby Football Union
Cantons of Bern and Geneva
Chinese Academy of Sciences
Defence Science Institute
MNE
Agencia Nacional de Promoción Científica y Tecnológica
Royal Society
Minerva Foundation
National Research Foundation
Generalitat Valenciana
CERN
Ministerstvo Školství, Mládeže a Tělovýchovy
National Research Council Canada
Brookhaven National Laboratory
Alexander von Humboldt-Stiftung
Multiple Sclerosis Scientific Research Foundation
Caring Futures Institute, Flinders University
British Columbia Knowledge Development Fund
Ministry of Education, Culture, Sports, Science and Technology
UNCESCI/013
Center for Advancing Research Impact in SocietyJ1-3010
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen ForschungRPG-2020-004, SNSF—PCEFP2_194658
Norwegian Financial Mechanism2014-2021
Narodowa Agencja Wymiany AkademickiejPPN/PPO/2020/1/00002/U/00001
European Research CouncilERC 101089007, ERC—948254
Agence Nationale de la RechercheANR-20-CE31-0013, ANR-21-CE31-0022
NDGFCC-IN2P3
Norges ForskningsrådRCN-314472
DRAC21/SCI/017
GenT Programmes Generalitat ValencianaCIDEGENT/2019/023, CIDEGENT/2019/027
Deutsche ForschungsgemeinschaftDFG—469666862, DFG—CR 312/5-2
Knut och Alice Wallenbergs StiftelseKAW 2022.0358
Fondo Nacional de Desarrollo Científico y Tecnológico1230987, 1190886, 1210400
Japan Society for the Promotion of Science22KK0227, 22H01227, JP21H05085, JP22H04944
VetenskapsrådetVR 2022-03845
Investissements d’Avenir LabexANR-11-LABX-0012
Narodowe Centrum NaukiUMO-2022/47/O/ST2/00148, UMO-2020/37/B/ST2/01043, 2022/47/B/ST2/03059, NCN UMO-2019/34/E/ST2/00393, NCN 2021/42/E/ST2/00350
Fundación BBVALEO22-1-603
DNSRCIN2P3-CNRS
National Natural Science Foundation of China12175119, NSFC 12275265
Horizon 2020 Framework ProgrammeCHIST-ERA-19-XAI-00
European Regional Development FundIDIFEDER/2018/048
Ministerio de Ciencia e InnovaciónRYC2020-030254-I, RYC2019-028510-I

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