Measurement of the lifetimes of promptly produced Ωc                      0 and Ξc                      0 baryons

LHCb Collaboration

doi:10.1016/j.scib.2021.11.022

Measurement of the lifetimes of promptly produced Ω_c ⁰ and Ξ_c ⁰ baryons

LHCb Collaboration

Science Park 105
University of Warwick
Physik-Institut der Universität Zürich
University of Liverpool
Universidade de Santiago de Compostela
University of Bristol
Clermont-Auvergne University
Sorbonne Université
University of Michigan, Ann Arbor
Sezione INFN di Milano
University of Cincinnati
Fakultät Physik
University of Dortmund
European Organization for Nuclear Research
SUPA
University of Glasgow
University of Barcelona
Department of Physics and Astronomy
University of Manchester
Petersburg Nuclear Physics Institute (PNPI)
University of Cambridge
Instituto de Biofisica da UFRJ
Université Paris-Saclay
Istituto Nazionale di Fisica Nucleare, Sezione di Firenze
Sezione INFN di Ferrara
University of Chinese Academy of Sciences
University of Heidelberg
Kurchatov Institute
Syracuse University
Yandex School of Data Analysis
Aix-Marseille Université
Ip Paris
Institute of Physics
ENAC-IIC-GEL
Centro Brasileiro de Pesquisas Fisicas
Imperial College London
Sezione di Genova
National University of Science and Technology “MISIS”

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

37 Citations (Scopus)

Résumé

A measurement of the lifetimes of the Ω_c ⁰ and Ξ_c ⁰ baryons is reported using proton–proton collision data at a centre-of-mass energy of 13TeV, corresponding to an integrated luminosity of 5.4fb^-1 collected by the LHCb experiment. The Ω_c ⁰ and Ξ_c ⁰ baryons are produced directly from proton interactions and reconstructed in the pK^-K^-π⁺ final state. The Ω_c ⁰ lifetime is measured to be 276.5±13.4±4.4±0.7fs, and the Ξ_c ⁰ lifetime is measured to be 148.0±2.3±2.2±0.2fs, 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 Ω_c ⁰ lifetime, and provide the single most precise measurement of the Ω_c ⁰ lifetime.

langue originale	Anglais
Pages (de - à)	479-487
Nombre de pages	9
journal	Science Bulletin
Volume	67
Numéro de publication	5
Les DOIs	https://doi.org/10.1016/j.scib.2021.11.022
état	Publié - 15 mars 2022

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10.1016/j.scib.2021.11.022

Contient cette citation

@article{dfe024a0420d430297c19897ef755ec5,

title = "Measurement of the lifetimes of promptly produced Ωc 0 and Ξc 0 baryons",

abstract = "A measurement of the lifetimes of the Ωc 0 and Ξc 0 baryons is reported using proton{\textendash}proton collision data at a centre-of-mass energy of 13TeV, corresponding to an integrated luminosity of 5.4fb-1 collected by the LHCb experiment. The Ωc 0 and Ξc 0 baryons are produced directly from proton interactions and reconstructed in the pK-K-π+ final state. The Ωc 0 lifetime is measured to be 276.5±13.4±4.4±0.7fs, and the Ξc 0 lifetime is measured to be 148.0±2.3±2.2±0.2fs, 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 Ωc 0 lifetime, and provide the single most precise measurement of the Ωc 0 lifetime.",

keywords = "Charm physics, Charmed baryon, Flavour physics, LHCb, Lifetime, QCD",

author = "\{LHCb Collaboration\} and R. Aaij and Abdelmotteleb, \{A. S.W.\} and \{Abell{\'a}n Beteta\}, C. and T. Ackernley and B. Adeva and M. Adinolfi and H. Afsharnia and C. Agapopoulou and Aidala, \{C. A.\} and S. Aiola and Z. Ajaltouni and S. Akar and J. Albrecht and F. Alessio and M. Alexander and \{Alfonso Albero\}, A. and Z. Aliouche and G. Alkhazov and \{Alvarez Cartelle\}, P. and S. Amato and Amey, \{J. L.\} and Y. Amhis and L. An and L. Anderlini and A. Andreianov and M. Andreotti and D. Ao and F. Archilli and A. Artamonov and M. Artuso and K. Arzymatov and E. Aslanides and M. Atzeni and B. Audurier and S. Bachmann and M. Bachmayer and Back, \{J. J.\} and \{Baladron Rodriguez\}, P. and V. Balagura and W. Baldini and \{Baptista Leite\}, J. and M. Barbetti and Barlow, \{R. J.\} and S. Barsuk and W. Barter and M. Bartolini and F. Baryshnikov and F. Fleuret and E. Maurice and Niel, \{E. M.\}",

note = "Publisher Copyright: {\textcopyright} 2021 Science China Press",

year = "2022",

month = mar,

day = "15",

doi = "10.1016/j.scib.2021.11.022",

language = "English",

volume = "67",

pages = "479--487",

journal = "Science Bulletin",

issn = "2095-9273",

publisher = "Elsevier B.V.",

number = "5",

}

TY - JOUR

T1 - Measurement of the lifetimes of promptly produced Ωc 0 and Ξc 0 baryons

AU - LHCb Collaboration

AU - Aaij, R.

AU - Abdelmotteleb, A. S.W.

AU - Abellán Beteta, C.

AU - Ackernley, T.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Afsharnia, H.

AU - Agapopoulou, C.

AU - Aidala, C. A.

AU - Aiola, S.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Alfonso Albero, A.

AU - Aliouche, Z.

AU - Alkhazov, G.

AU - Alvarez Cartelle, P.

AU - Amato, S.

AU - Amey, J. L.

AU - Amhis, Y.

AU - An, L.

AU - Anderlini, L.

AU - Andreianov, A.

AU - Andreotti, M.

AU - Ao, D.

AU - Archilli, F.

AU - Artamonov, A.

AU - Artuso, M.

AU - Arzymatov, K.

AU - Aslanides, E.

AU - Atzeni, M.

AU - Audurier, B.

AU - Bachmann, S.

AU - Bachmayer, M.

AU - Back, J. J.

AU - Baladron Rodriguez, P.

AU - Balagura, V.

AU - Baldini, W.

AU - Baptista Leite, J.

AU - Barbetti, M.

AU - Barlow, R. J.

AU - Barsuk, S.

AU - Barter, W.

AU - Bartolini, M.

AU - Baryshnikov, F.

AU - Fleuret, F.

AU - Maurice, E.

AU - Niel, E. M.

PY - 2022/3/15

Y1 - 2022/3/15

N2 - A measurement of the lifetimes of the Ωc 0 and Ξc 0 baryons is reported using proton–proton collision data at a centre-of-mass energy of 13TeV, corresponding to an integrated luminosity of 5.4fb-1 collected by the LHCb experiment. The Ωc 0 and Ξc 0 baryons are produced directly from proton interactions and reconstructed in the pK-K-π+ final state. The Ωc 0 lifetime is measured to be 276.5±13.4±4.4±0.7fs, and the Ξc 0 lifetime is measured to be 148.0±2.3±2.2±0.2fs, 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 Ωc 0 lifetime, and provide the single most precise measurement of the Ωc 0 lifetime.

AB - A measurement of the lifetimes of the Ωc 0 and Ξc 0 baryons is reported using proton–proton collision data at a centre-of-mass energy of 13TeV, corresponding to an integrated luminosity of 5.4fb-1 collected by the LHCb experiment. The Ωc 0 and Ξc 0 baryons are produced directly from proton interactions and reconstructed in the pK-K-π+ final state. The Ωc 0 lifetime is measured to be 276.5±13.4±4.4±0.7fs, and the Ξc 0 lifetime is measured to be 148.0±2.3±2.2±0.2fs, 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 Ωc 0 lifetime, and provide the single most precise measurement of the Ωc 0 lifetime.

KW - Charm physics

KW - Charmed baryon

KW - Flavour physics

KW - LHCb

KW - Lifetime

KW - QCD

U2 - 10.1016/j.scib.2021.11.022

DO - 10.1016/j.scib.2021.11.022

M3 - Article

AN - SCOPUS:85121980379

SN - 2095-9273

VL - 67

SP - 479

EP - 487

JO - Science Bulletin

JF - Science Bulletin

IS - 5

ER -

Measurement of the lifetimes of promptly produced Ωc 0 and Ξc 0 baryons

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Contient cette citation

Measurement of the lifetimes of promptly produced Ω_c ⁰ and Ξ_c ⁰ baryons