Observation of the Λb                      0→J/ψΛϕ decay in proton-proton collisions at s=13TeV

The CMS collaboration

doi:10.1016/j.physletb.2020.135203

Observation of the Λ_b ⁰→J/ψΛϕ decay in proton-proton collisions at s=13TeV

The CMS collaboration

Yerevan Physics Institute
Institut für Hochenergiephysik
University of Antwerp
Vrjie Universiteit Brussel
Saha Institute of Nuclear Physics
Bhabha Atomic Research Centre
Institute for Research in Fundamental Sciences (IPM)
University College Dublin
INFN Sezione di Bari
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Florida International University
Université Libre de Bruxelles
Ghent University
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Centro Brasileiro de Pesquisas Fisicas
Rua São Francisco de Xavier
São Paulo State University
Federal University of ABC (UFABC)
Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences
University of Sofia
Beihang University
Institute of High Energy Physics, Chinese Academy of Sciences
State Key Laboratory of Nuclear Physics and Technology
Tsinghua University
Zhejiang University
Universidad de Los Andes, Colombia
Universidad de Antioquia
Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, University of Split
Faculty of Science, University of Split
Ruđer Bošković Institute
University of Cyprus
Charles University
Escuela Politecnica Nacional
Universidad San Francisco de Quito
Egyptian Network of High Energy Physics
National Institute of Chemical Physics and Biophysics, Tallinn
University of Helsinki
Helsinki Institute of Physics
LUT University
Université Paris-Saclay
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Université de Strasbourg
Université Paris-Sud
University of Lyon
Georgian Technical University
Tbilisi State University
RWTH Aachen University
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Institute of Meteorology and Climate Research
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University of Ioannina
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Wigner Research Centre for Physics
Institute of Nuclear Research ATOMKI
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Indian Institute of Science
National Institute of Science Education and Research
Panjab University
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Indian Institute of Technology Madras
Tata Institute of Fundamental Research, Mumbai
Indian Institute of Science Education and Research (IISER)
Politecnico di Bari
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Università degli Studi della Basilicata
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Laboratory of Molecular Pathology
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Kyungpook National University
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Hanyang University
Korea University
Kyung Hee University
Sejong University
Seoul National University
University of Seoul
Sungkyunkwan University
Riga Technical University
Vilnius University
University Malaya
Universidad de Sonora
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Universidad Iberoamericana
Benemerita Universidad Autonoma de Puebla
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University of Montenegro
University of Auckland
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Agh University of Science and Technology Faculty of Computer Science
National Centre for Nuclear Research
University of Warsaw
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Joint Institute for Nuclear Research, Dubna
Petersburg Nuclear Physics Institute (PNPI)
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Moscow Institute of Physics and Technology
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Moscow State University
Novosibirsk State University
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University of Belgrade
Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT)
Universidad Autónoma de Madrid
University of Oviedo
CSIC-Univ. Cantabria
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Paul Scherrer Institut
University of Ruhuna
European Organization for Nuclear Research
ETH Zurich
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National Central University
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Bogazici University
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Cukurova University
Middle East Technical University (METU)
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Academy of Science of Ukraine
Kharkov Institute of Physics and Technology
University of Bristol
CCLRC Rutherford Appleton Laboratory
Imperial College London
Brunel University London
Baylor University
Catholic University of America
University of Alabama
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Women and Infants Hospital of Rhode Island-Warren Alpert Medical School of Brown University
University of California, Davis
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Universidade Federal de Pelotas
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Suez University
British University in Egypt
Université de Haute Alsace
Erzincan University
ENEA Climate Modeling and Impacts
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Consejo Nacional de Ciencia y Tecnología
Consejo Nacional de Ciencia y Tecnología
Warsaw University of Technology
St. Petersburg State Polytechnical University
Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
Texas A&M University at Qatar
University of Belgrade
University of Siena
Stefan Meyer Institute for Subatomic Physics (SMI)
Burdur Mehmet Akif Ersoy University
Şırnak University
Beykent University
Istanbul Aydin University
Mersin University
Piri Reis University
Gaziosmanpasa University
Ozyegin University
Izmir Institute of Technology
University of Chinese Academy of Sciences
Marmara University
Kafkas University
Istanbul Bilgi University
Hacettepe University
Adiyaman University
University of Southampton
IPPP Durham University
Monash University
Bethel University
Karamanoğlu Mehmetbey University
Bingol University
Sinop University

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

Résumé

The observation of the Λ_b ⁰→J/ψΛϕ decay is reported using proton-proton collision data collected at s=13TeV by the CMS experiment at the LHC in 2018, corresponding to an integrated luminosity of 60fb⁻¹. The ratio of the branching fractions B(Λ_b ⁰→J/ψΛϕ)/B(Λ_b ⁰→ψ(2S)Λ) is measured to be (8.26±0.90(stat)±0.68(syst)±0.11(B))×10⁻², where the first uncertainty is statistical, the second is systematic, and the last uncertainty reflects the uncertainties in the world-average branching fractions of ϕ and ψ(2S) decays to the reconstructed final states.

langue originale	Anglais
Numéro d'article	135203
journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	802
Les DOIs	https://doi.org/10.1016/j.physletb.2020.135203
état	Publié - 10 mars 2020
Modification externe	Oui

Accès au document

10.1016/j.physletb.2020.135203

Contient cette citation

@article{3c4c96a220eb4e59b2c936945f7ddfd5,

title = "Observation of the Λb 0→J/ψΛϕ decay in proton-proton collisions at s=13TeV",

abstract = "The observation of the Λb 0→J/ψΛϕ decay is reported using proton-proton collision data collected at s=13TeV by the CMS experiment at the LHC in 2018, corresponding to an integrated luminosity of 60fb−1. The ratio of the branching fractions B(Λb 0→J/ψΛϕ)/B(Λb 0→ψ(2S)Λ) is measured to be (8.26±0.90(stat)±0.68(syst)±0.11(B))×10−2, where the first uncertainty is statistical, the second is systematic, and the last uncertainty reflects the uncertainties in the world-average branching fractions of ϕ and ψ(2S) decays to the reconstructed final states.",

keywords = "CMS, Computing, Heavy-flavor spectroscopy, b physics",

author = "\{The CMS collaboration\} and Sirunyan, \{A. M.\} and A. Tumasyan and W. Adam and F. Ambrogi and T. Bergauer and M. Dragicevic and J. Er{\"o} and A. Escalantedelvalle and M. Flechl and R. Fr{\"u}hwirth and M. Jeitler and N. Krammer and I. Kr{\"a}tschmer and D. Liko and T. Madlener and I. Mikulec and N. Rad and J. Schieck and R. Sch{\"o}fbeck and M. Spanring and W. Waltenberger and Wulz, \{C. E.\} and M. Zarucki and V. Drugakov and V. Mossolov and J. Suarezgonzalez and Darwish, \{M. R.\} and Dewolf, \{E. A.\} and D. Dicroce and X. Janssen and A. Lelek and M. Pieters and H. Rejebsfar and \{Van haevermaet\}, H. and \{Van mechelen\}, P. and \{Van putte\}, S. and \{Van remortel\}, N. and F. Blekman and Bols, \{E. S.\} and Chhibra, \{S. S.\} and J. D'hondt and J. Declercq and D. Lontkovskyi and F. Beaudette and R. Granierdecassagnac and C. Ochando and P. Paganini and A. Zabi and A. Zghiche and A. Cappati",

note = "Publisher Copyright: {\textcopyright} 2020 The Author",

year = "2020",

month = mar,

day = "10",

doi = "10.1016/j.physletb.2020.135203",

language = "English",

volume = "802",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

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TY - JOUR

T1 - Observation of the Λb 0→J/ψΛϕ decay in proton-proton collisions at s=13TeV

AU - The CMS collaboration

AU - Sirunyan, A. M.

AU - Tumasyan, A.

AU - Adam, W.

AU - Ambrogi, F.

AU - Bergauer, T.

AU - Dragicevic, M.

AU - Erö, J.

AU - Escalantedelvalle, A.

AU - Flechl, M.

AU - Frühwirth, R.

AU - Jeitler, M.

AU - Krammer, N.

AU - Krätschmer, I.

AU - Liko, D.

AU - Madlener, T.

AU - Mikulec, I.

AU - Rad, N.

AU - Schieck, J.

AU - Schöfbeck, R.

AU - Spanring, M.

AU - Waltenberger, W.

AU - Wulz, C. E.

AU - Zarucki, M.

AU - Drugakov, V.

AU - Mossolov, V.

AU - Suarezgonzalez, J.

AU - Darwish, M. R.

AU - Dewolf, E. A.

AU - Dicroce, D.

AU - Janssen, X.

AU - Lelek, A.

AU - Pieters, M.

AU - Rejebsfar, H.

AU - Van haevermaet, H.

AU - Van mechelen, P.

AU - Van putte, S.

AU - Van remortel, N.

AU - Blekman, F.

AU - Bols, E. S.

AU - Chhibra, S. S.

AU - D'hondt, J.

AU - Declercq, J.

AU - Lontkovskyi, D.

AU - Beaudette, F.

AU - Granierdecassagnac, R.

AU - Ochando, C.

AU - Paganini, P.

AU - Zabi, A.

AU - Zghiche, A.

AU - Cappati, A.

PY - 2020/3/10

Y1 - 2020/3/10

N2 - The observation of the Λb 0→J/ψΛϕ decay is reported using proton-proton collision data collected at s=13TeV by the CMS experiment at the LHC in 2018, corresponding to an integrated luminosity of 60fb−1. The ratio of the branching fractions B(Λb 0→J/ψΛϕ)/B(Λb 0→ψ(2S)Λ) is measured to be (8.26±0.90(stat)±0.68(syst)±0.11(B))×10−2, where the first uncertainty is statistical, the second is systematic, and the last uncertainty reflects the uncertainties in the world-average branching fractions of ϕ and ψ(2S) decays to the reconstructed final states.

AB - The observation of the Λb 0→J/ψΛϕ decay is reported using proton-proton collision data collected at s=13TeV by the CMS experiment at the LHC in 2018, corresponding to an integrated luminosity of 60fb−1. The ratio of the branching fractions B(Λb 0→J/ψΛϕ)/B(Λb 0→ψ(2S)Λ) is measured to be (8.26±0.90(stat)±0.68(syst)±0.11(B))×10−2, where the first uncertainty is statistical, the second is systematic, and the last uncertainty reflects the uncertainties in the world-average branching fractions of ϕ and ψ(2S) decays to the reconstructed final states.

KW - CMS

KW - Computing

KW - Heavy-flavor spectroscopy

KW - b physics

U2 - 10.1016/j.physletb.2020.135203

DO - 10.1016/j.physletb.2020.135203

M3 - Article

AN - SCOPUS:85078529004

SN - 0370-2693

VL - 802

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

M1 - 135203

ER -

Observation of the Λb 0→J/ψΛϕ decay in proton-proton collisions at s=13TeV

Résumé

Accès au document

Empreinte digitale

Contient cette citation

Observation of the Λ_b ⁰→J/ψΛϕ decay in proton-proton collisions at s=13TeV