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Precise determination of the B s 0 – B ¯ s 0 oscillation frequency

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LHCb Collaboration (Including: Back, J. J., Blake, T., Brossa Gonzalo, A., Cicala, M. F., Costa Sobral, Cayo, Garcia Martin, L. M., Gershon, T. J., Hunter, R. J., Jones, T. P., Kenzie, M., Kreps, Michal, Latham, Thomas, Lupton, Oliver, Millard, E., Morris, A. G. (Alan George), Pagare, B., Ramos Pernas, M., Sahoo, Niladri and Vesterinen, M.). (2022) Precise determination of the B s 0 – B ¯ s 0 oscillation frequency. Nature Physics, 18 (1). pp. 1-5. doi:10.1038/s41567-021-01394-x ISSN 1745-2481.

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Official URL: https://doi.org/10.1038/s41567-021-01394-x

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Abstract

Mesons comprising a beauty quark and strange quark can oscillate between particle (Bs0) and antiparticle (B¯s0) flavour eigenstates, with a frequency given by the mass difference between heavy and light mass eigenstates, Δms. Here we present a measurement of Δms using Bs0→Ds−π+ decays produced in proton–proton collisions collected with the LHCb detector at the Large Hadron Collider. The oscillation frequency is found to be Δms = 17.7683 ± 0.0051 ± 0.0032 ps−1, where the first uncertainty is statistical and the second is systematic. This measurement improves on the current Δms precision by a factor of two. We combine this result with previous LHCb measurements to determine Δms = 17.7656 ± 0.0057 ps−1, which is the legacy measurement of the original LHCb detector.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
SWORD Depositor: Library Publications Router
Library of Congress Subject Headings (LCSH): Particles (Nuclear physics) -- Flavor, B mesons -- Decay, Quarks -- Decay, Quantum field theory, Collisions (Nuclear physics), Large Hadron Collider (France and Switzerland)
Journal or Publication Title: Nature Physics
Publisher: Nature Publishing Group UK
ISSN: 1745-2481
Official Date: 6 January 2022
Dates:
DateEvent
6 January 2022Published
17 September 2021Accepted
Volume: 18
Number: 1
Page Range: pp. 1-5
DOI: 10.1038/s41567-021-01394-x
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access (Creative Commons)
Date of first compliant deposit: 10 February 2022
Date of first compliant Open Access: 10 February 2022
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
UNSPECIFIEDCERNhttp://dx.doi.org/10.13039/100012470
UNSPECIFIEDCoordenação de Aperfeiçoamento de Pessoal de Nível Superiorhttp://dx.doi.org/10.13039/501100002322
UNSPECIFIEDConselho Nacional de Desenvolvimento Científico e Tecnológicohttp://dx.doi.org/10.13039/501100003593
UNSPECIFIEDFundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeirohttp://dx.doi.org/10.13039/501100004586
UNSPECIFIEDFinanciadora de Estudos e Projetoshttp://dx.doi.org/10.13039/501100004809
UNSPECIFIED[MSTPRC] Ministry of Science and Technology of the People's Republic of Chinahttp://dx.doi.org/10.13039/501100002855
UNSPECIFIED[NSFC] National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809
UNSPECIFIED[CNRS] Centre National de la Recherche Scientifiquehttp://dx.doi.org/10.13039/501100004794
UNSPECIFIED[IN2P3] Institut national de physique nucléaire et de physique des particuleshttp://viaf.org/viaf/137207166
UNSPECIFIEDBundesministerium für Bildung und Forschunghttp://dx.doi.org/10.13039/501100002347
UNSPECIFIED[DFG] Deutsche Forschungsgemeinschafthttp://dx.doi.org/10.13039/501100001659
UNSPECIFIEDMax-Planck-Gesellschafthttp://dx.doi.org/10.13039/501100004189
UNSPECIFIED[INFN] Instituto Nazionale di Fisica Nuclearehttp://dx.doi.org/10.13039/501100004007
UNSPECIFIED[NWO] Nederlandse Organisatie voor Wetenschappelijk Onderzoekhttp://dx.doi.org/10.13039/501100003246
UNSPECIFIEDMinisterstwo Nauki i Szkolnictwa Wyższegohttp://dx.doi.org/10.13039/501100004569
UNSPECIFIEDNarodowe Centrum Naukihttp://dx.doi.org/10.13039/501100004281
UNSPECIFIEDMinisterul Educaţiei Naţionalehttp://dx.doi.org/10.13039/501100003766
UNSPECIFIEDInstitutul de Fizică Atomicăhttp://viaf.org/viaf/154740159
UNSPECIFIED[MES] Ministry of Education and Science of the Russian Federationhttp://dx.doi.org/10.13039/501100003443
UNSPECIFIEDSpain. Ministerio de Ciencia e Innovaciónhttp://viaf.org/viaf/137614380
UNSPECIFIED[SNSF] Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschunghttp://dx.doi.org/10.13039/501100001711
UNSPECIFIED[SERI] Staatssekretariat für Bildung, Forschung und Innovationhttp://dx.doi.org/10.13039/501100007352
UNSPECIFIEDNational Academy of Sciences of Ukrainehttp://dx.doi.org/10.13039/501100004742
UNSPECIFIED[STFC] Science and Technology Facilities Councilhttp://dx.doi.org/10.13039/501100000271
UNSPECIFIED[DOE] U.S. Department of Energyhttp://dx.doi.org/10.13039/100000015
UNSPECIFIEDNational Physical Science Consortiumhttp://dx.doi.org/10.13039/100013904
UNSPECIFIED[NSFS] National Science Foundation of Sri Lankahttp://dx.doi.org/10.13039/501100008982
UNSPECIFIED[ARC] Australian Research Councilhttp://dx.doi.org/10.13039/501100000923
UNSPECIFIEDAustralian Research Data Commonshttp://viaf.org/viaf/220706131
UNSPECIFIEDAlexander von Humboldt-Stiftunghttp://dx.doi.org/10.13039/100005156
UNSPECIFIEDEuropean Commissionhttp://dx.doi.org/10.13039/501100000780
UNSPECIFIEDH2020 Marie Skłodowska-Curie Actionshttp://dx.doi.org/10.13039/100010665
UNSPECIFIEDEuropean Research Councilhttp://dx.doi.org/10.13039/501100000781
UNSPECIFIEDAix-Marseille Initiative of excellenceUNSPECIFIED
UNSPECIFIED[ANR] Agence Nationale de la Recherchehttp://dx.doi.org/10.13039/501100001665
UNSPECIFIEDLabex P2IO UNSPECIFIED
UNSPECIFIEDRégion Auvergne-Rhône-AlpesUNSPECIFIED
UNSPECIFIEDOrigins, Constituents and EVolution of the UniverseUNSPECIFIED
UNSPECIFIEDZhongguo ke xue yuanhttp://viaf.org/viaf/168763948
UNSPECIFIEDFundamental Research Funds for the Central Universitieshttp://dx.doi.org/10.13039/501100012226
UNSPECIFIEDProgram of Guangzhou UNSPECIFIED
UNSPECIFIED[RFBR]Russian Foundation for Basic Researchhttp://dx.doi.org/10.13039/501100002261
UNSPECIFIED[RSF] Russian Science Foundationhttp://dx.doi.org/10.13039/501100006769
UNSPECIFIEDYandex LLC UNSPECIFIED
UNSPECIFIEDGeneralitat Valencianahttp://dx.doi.org/10.13039/501100003359
UNSPECIFIEDGeneralitat de Catalunyahttp://dx.doi.org/10.13039/501100002809
UNSPECIFIEDLeverhulme Trusthttp://dx.doi.org/10.13039/501100000275
UNSPECIFIED[RS] Royal Societyhttp://dx.doi.org/10.13039/501100000288
UNSPECIFIEDUK Research and Innovationhttp://dx.doi.org/10.13039/100014013
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