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Search for lepton flavor violation in ϒ(3S)→e^{±}μ^{∓}

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BABAR Collaboration (Including: Gershon, T. J., Harrison, P. F. and Latham, T. E.). (2022) Search for lepton flavor violation in ϒ(3S)→e^{±}μ^{∓}. Physical Review Letters, 128 (9). doi:10.1103/PhysRevLett.128.091804 ISSN 0031-9007.

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Official URL: https://doi.org/10.1103/PhysRevLett.128.091804

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Abstract

We report on the first search for electron-muon lepton flavor violation (LFV) in the decay of a b quark and b antiquark bound state. We look for the LFV decay Υ(3S)→e±μ∓ in a sample of 118 million Υ(3S) mesons from 27  fb−1 of data collected with the BABAR detector at the SLAC PEP-II e+e− collider operating with a 10.36 GeV center-of-mass energy. No evidence for a signal is found, and we set a limit on the branching fraction B[Υ(3S)→e±μ∓]<3.6×10−7 at 90% C. L. This result can be interpreted as a limit ΛNP/g2NP>80  TeV on the energy scale ΛNP divided by the coupling-squared g2NP of relevant new physics (NP).

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
Library of Congress Subject Headings (LCSH): Leptons (Nuclear physics) -- Decay, Mesons -- Decay, Particles (Nuclear physics) -- Flavor
Journal or Publication Title: Physical Review Letters
Publisher: American Physical Society
ISSN: 0031-9007
Official Date: 3 March 2022
Dates:
DateEvent
3 March 2022Published
27 January 2022Accepted
Volume: 128
Number: 9
DOI: 10.1103/PhysRevLett.128.091804
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access (Creative Commons)
Date of first compliant deposit: 3 May 2022
Date of first compliant Open Access: 3 May 2022
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
UNSPECIFIED[DOE] U.S. Department of Energyhttp://dx.doi.org/10.13039/100000015
UNSPECIFIED[NSF] National Science Foundation (US)http://dx.doi.org/10.13039/100000001
UNSPECIFIED[NSERC] Natural Sciences and Engineering Research Council of Canadahttp://dx.doi.org/10.13039/501100000038
UNSPECIFIED[CEA] Commissariat à l'Énergie Atomique et aux Énergies Alternativeshttp://dx.doi.org/10.13039/501100006489
UNSPECIFIEDInstitut National de Physique Nucléaire et de Physique des Particuleshttp://dx.doi.org/10.13039/501100012441
UNSPECIFIEDBundesministerium für Bildung und Forschunghttp://dx.doi.org/10.13039/501100002347
UNSPECIFIEDDeutsche Forschungsgemeinschafthttp://dx.doi.org/10.13039/501100001659
UNSPECIFIED[INFN] Instituto Nazionale di Fisica Nuclearehttp://dx.doi.org/10.13039/501100004007
UNSPECIFIEDStichting voor Fundamenteel Onderzoek der Materiehttp://dx.doi.org/10.13039/501100001712
UNSPECIFIEDNorges Forskningsrådhttp://dx.doi.org/10.13039/501100005416
UNSPECIFIEDMinistry of Education and Science of the Russian Federationhttp://dx.doi.org/10.13039/501100003443
UNSPECIFIED[MINECO] Ministerio de Economía y Competitividadhttp://dx.doi.org/10.13039/501100003329
UNSPECIFIED[STFC] Science and Technology Facilities Councilhttp://dx.doi.org/10.13039/501100000271
UNSPECIFIEDUnited States-Israel Binational Science Foundationhttp://dx.doi.org/10.13039/501100001742
UNSPECIFIEDH2020 Marie Skłodowska-Curie Actionshttp://dx.doi.org/10.13039/100010665
UNSPECIFIEDAlfred P. Sloan Foundationhttp://dx.doi.org/10.13039/100000879
Contributors:
ContributionNameContributor ID
Research GroupBABAR Collaboration, UNSPECIFIED

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