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Measurement of the lifetimes of promptly produced Ωc0 and Ξc0 baryons

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LHCb Collaboration (Including:

Abdelmotteleb, A. S. W., Back, J. J., Beck, A., Blake, T., Brosso Gonzalo, A., Cicala, M. F., Costa Sobral, C. M., Garcia Martin, L. M., Gershon, T. J., Hunter, R. J. et al.
). (2022) Measurement of the lifetimes of promptly produced Ωc0 and Ξc0 baryons. Science Bulletin, 67 (5). pp. 479-487. doi:10.1016/j.scib.2021.11.022 ISSN 2095-9273.

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Official URL: http://dx.doi.org/10.1016/j.scib.2021.11.022

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Abstract

A measurement of the lifetimes of the X0 c and N0 c baryons is reported using proton–proton collision data at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.4 fb-1 collected by the LHCb experiment. The X0 c and N0 c baryons are produced directly from proton interactions and reconstructed in the pK-K-pþ final state. The X0 c lifetime is measured to be 276.5 13.4 4.4 0.7 fs, and the N0 c lifetime is measured to be 148.0 2.3 2.2 0.2 fs, where the first uncertainty is statistical, the second systematic, and the third due to the uncertainty on the D0 lifetime. These results confirm previous LHCb measurements based on semileptonic beauty-hadron decays, which disagree with earlier results of a four times shorter X0 c lifetime, and provide the single most precise measurement of the X0 c lifetime

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
Library of Congress Subject Headings (LCSH): Large Hadron Collider (France and Switzerland), Baryons , Particles (Nuclear physics) -- Charm, Proton-proton interactions, Beta decay
Journal or Publication Title: Science Bulletin
Publisher: Elsevier
ISSN: 2095-9273
Official Date: 15 March 2022
Dates:
DateEvent
15 March 2022Published
9 March 2022Available
17 November 2021Accepted
6 September 2021Submitted
Volume: 67
Number: 5
Page Range: pp. 479-487
DOI: 10.1016/j.scib.2021.11.022
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access (Creative Commons)
Date of first compliant deposit: 12 July 2022
Date of first compliant Open Access: 13 July 2022
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
UNSPECIFIEDCERNhttp://dx.doi.org/10.13039/100012470
UNSPECIFIED[STFC] Science and Technology Facilities Councilhttp://dx.doi.org/10.13039/501100000271
EPLANETHorizon 2020 Framework Programmehttp://dx.doi.org/10.13039/100010661
UNSPECIFIEDH2020 Marie Skłodowska-Curie Actionshttp://dx.doi.org/10.13039/100010665
UNSPECIFIED[ERC] Horizon 2020 Framework Programmehttp://dx.doi.org/10.13039/100010661
UNSPECIFIEDRoyal Societyhttp://dx.doi.org/10.13039/501100000288
UNSPECIFIEDLeverhulme Trusthttp://dx.doi.org/10.13039/501100000275
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
UNSPECIFIEDMinistry 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
UNSPECIFIEDInstitut national de physique nucléaire et de physique des particules http://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 Edukacji i NaukiUNSPECIFIED
UNSPECIFIEDNarodowe Centrum Naukihttp://dx.doi.org/10.13039/501100004281
UNSPECIFIEDInstitutul de Fizică AtomicăUNSPECIFIED
UNSPECIFIEDMoskovskai︠a︡ shkola ėkonomikihttp://viaf.org/viaf/85147118135626340598
UNSPECIFIEDMinisterio de Ciencia e Innovaciónhttp://dx.doi.org/10.13039/501100004837
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
UNSPECIFIEDU.S. Department of Energyhttp://dx.doi.org/10.13039/100000015
UNSPECIFIED[NSF] National Science Foundation (US)http://dx.doi.org/10.13039/100000001

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