Observation of ᴧb0→ ᴧc+ D̄(*)0K− and ᴧb0→ ᴧc+ Ds*− decays

LHCb Collaboration

doi:10.1140/epjc/s10052-024-12752-3

Observation of ᴧ_b⁰→ ᴧ_c⁺ D̄^()0K⁻ and ᴧ_b⁰→ ᴧ_c⁺ D_s^− decays

LHCb Collaboration

CERN
National Institute for Subatomic Physics
University of Warwick
University of Zurich
University of Liverpool
University of Santiago de Compostela
University of Bristol
Uppsala University
University of Michigan, Ann Arbor
Université Clermont Auvergne
University of Cincinnati
National Institute for Nuclear Physics
TU Dortmund University
University of Glasgow
University of Barcelona
University of Manchester
University of Cambridge
Sorbonne Université
Universidade Federal do Rio de Janeiro
Université Paris-Saclay
Peking University
Syracuse University
University of Milan - Bicocca
University of Chinese Academy of Sciences
University of Rome Tor Vergata
Consejo Nacional de Rectores (CONARE)
CPPM
Massachusetts Institute of Technology
Laboratoire Leprince-Ringuet
University of Oxford
Université Savoie Mont Blanc
Heidelberg University
Swiss Federal Institute of Technology Lausanne
Centro Brasileiro de Pesquisas Físicas
University of Florence
Pontifícia Universidade Católica do Rio de Janeiro
University of Edinburgh
RWTH Aachen University
Scuola Normale Superiore di Pisa
CAS - Institute of High Energy Physics
Ramon Llull University
University of Padua
Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
Imperial College London
Maastricht University
University of Ferrara
University of Maryland, College Park
South China Normal University
Wuhan University
University of Bologna
University of Genoa
University of Milan
NASU - Institute of Nuclear Research
University of A Coruna
Horia Hulubei National Institute of Physics and Nuclear Engineering
National Autonomous University of Honduras
Los Alamos National Laboratory
Hunan University
University of Cagliari
University of Groningen
Centro Federal de Educação Tecnológica Celso Suckow da Fonseca
University of Bari
Central China Normal University
Eötvös Loránd University
Tsinghua University
University College Dublin
Cracow University of Technology
Rutherford Appleton Laboratory
University of Bonn
Monash University
University of Perugia
AGH University of Krakow
National Centre for Nuclear Research
Universidade de Brasília
University of Valencia
Universidad Nacional de Colombia
University of Birmingham
NASU - Kharkov Institute of Physics and Technology
Vrije Universiteit Amsterdam
University of Pisa
Lanzhou University
Henan University
Excellence Cluster ORIGINS
Departement de Physique Nucleaire (SPhN)
University of Basilicata
Max Planck Institute for Nuclear Physics
University of Siena
University of Alcalá
University of Urbino

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5 Citas (Scopus)

Resumen

The decays Λ_b ⁰→Λ_c ⁺D¯^(∗)0K^- and Λ_b ⁰→Λ_c ⁺D_s ^∗- are observed for the first time, in proton-proton collision data at s=13TeV, corresponding to an integrated luminosity of 5.4fb^-1 collected with the LHCb detector. Their ratios of branching fractions with respect to the Λ_b ⁰→Λ_c ⁺D_s ^- mode are measured to be (Formula presented.) where the first uncertainties are statistical, the second systematic, and the third, for the Λ_b ⁰→Λ_c ⁺D¯^(∗)0K^- decays, are due to the uncertainties on the branching fractions of the D_s ^-→K^-K⁺π^- and D¯⁰→K⁺π^- decay modes. The measured branching fractions probe factorization assumptions in effective theories and provide the normalization for future pentaquark searches in Λ_b ⁰→Λ_c ⁺D¯^(∗)0K^- decay channels.

Idioma original	Inglés
Número de artículo	575
Número de páginas	18
Publicación	European Physical Journal C
Volumen	84
N.º	6
DOI	https://doi.org/10.1140/epjc/s10052-024-12752-3 https://doi.org/10.1140/epjc/s10052-024-12752-3
Estado	Publicada - 5 jun 2024
Publicado de forma externa	Sí

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@article{999692e387894012a3f3f79350756874,

title = "Observation of ᴧb0→ ᴧc+ {\=D}(*)0K− and ᴧb0→ ᴧc+ Ds*− decays",

abstract = "The decays Λb 0→Λc +D¯(∗)0K- and Λb 0→Λc +Ds ∗- are observed for the first time, in proton-proton collision data at s=13TeV, corresponding to an integrated luminosity of 5.4fb-1 collected with the LHCb detector. Their ratios of branching fractions with respect to the Λb 0→Λc +Ds - mode are measured to be (Formula presented.) where the first uncertainties are statistical, the second systematic, and the third, for the Λb 0→Λc +D¯(∗)0K- decays, are due to the uncertainties on the branching fractions of the Ds -→K-K+π- and D¯0→K+π- decay modes. The measured branching fractions probe factorization assumptions in effective theories and provide the normalization for future pentaquark searches in Λb 0→Λc +D¯(∗)0K- decay channels.",

author = "\{LHCb Collaboration\} and R. Aaij and Abdelmotteleb, \{A. S.W.\} and Beteta, \{C. Abellan\} and F. Abudin{\'e}n and T. Ackernley and B. Adeva and M. Adinolfi and P. Adlarson and C. Agapopoulou and Aidala, \{C. A.\} and Z. Ajaltouni and S. Akar and K. Akiba and P. Albicocco and J. Albrecht and F. Alessio and M. Alexander and \{Alfonso Albero\}, A. and Z. Aliouche and \{Alvarez Cartelle\}, P. and R. Amalric and S. Amato and Amey, \{J. L.\} and Y. Amhis and L. An and L. Anderlini and M. Andersson and A. Andreianov and P. Andreola and M. Andreotti and D. Andreou and A. Anelli and D. Ao and F. Archilli and M. Argenton and \{Arguedas Cuendis\}, S. and A. Artamonov and M. Artuso and E. Aslanides and M. Atzeni and B. Audurier and D. Bacher and \{Bachiller Perea\}, I. and S. Bachmann and M. Bachmayer and Back, \{J. J.\} and \{Baladron Rodriguez\}, P. and V. Balagura and W. Baldini and \{Castro Godinez\}, J.",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2024.",

year = "2024",

month = jun,

day = "5",

doi = "10.1140/epjc/s10052-024-12752-3",

language = "Ingl{\'e}s",

volume = "84",

journal = "European Physical Journal C",

issn = "1434-6044",

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TY - JOUR

T1 - Observation of ᴧb0→ ᴧc+ D̄(*)0K− and ᴧb0→ ᴧc+ Ds*− decays

AU - LHCb Collaboration

AU - Aaij, R.

AU - Abdelmotteleb, A. S.W.

AU - Beteta, C. Abellan

AU - Abudinén, F.

AU - Ackernley, T.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Adlarson, P.

AU - Agapopoulou, C.

AU - Aidala, C. A.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Akiba, K.

AU - Albicocco, P.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Alfonso Albero, A.

AU - Aliouche, Z.

AU - Alvarez Cartelle, P.

AU - Amalric, R.

AU - Amato, S.

AU - Amey, J. L.

AU - Amhis, Y.

AU - An, L.

AU - Anderlini, L.

AU - Andersson, M.

AU - Andreianov, A.

AU - Andreola, P.

AU - Andreotti, M.

AU - Andreou, D.

AU - Anelli, A.

AU - Ao, D.

AU - Archilli, F.

AU - Argenton, M.

AU - Arguedas Cuendis, S.

AU - Artamonov, A.

AU - Artuso, M.

AU - Aslanides, E.

AU - Atzeni, M.

AU - Audurier, B.

AU - Bacher, D.

AU - Bachiller Perea, I.

AU - Bachmann, S.

AU - Bachmayer, M.

AU - Back, J. J.

AU - Baladron Rodriguez, P.

AU - Balagura, V.

AU - Baldini, W.

AU - Castro Godinez, J.

PY - 2024/6/5

Y1 - 2024/6/5

N2 - The decays Λb 0→Λc +D¯(∗)0K- and Λb 0→Λc +Ds ∗- are observed for the first time, in proton-proton collision data at s=13TeV, corresponding to an integrated luminosity of 5.4fb-1 collected with the LHCb detector. Their ratios of branching fractions with respect to the Λb 0→Λc +Ds - mode are measured to be (Formula presented.) where the first uncertainties are statistical, the second systematic, and the third, for the Λb 0→Λc +D¯(∗)0K- decays, are due to the uncertainties on the branching fractions of the Ds -→K-K+π- and D¯0→K+π- decay modes. The measured branching fractions probe factorization assumptions in effective theories and provide the normalization for future pentaquark searches in Λb 0→Λc +D¯(∗)0K- decay channels.

AB - The decays Λb 0→Λc +D¯(∗)0K- and Λb 0→Λc +Ds ∗- are observed for the first time, in proton-proton collision data at s=13TeV, corresponding to an integrated luminosity of 5.4fb-1 collected with the LHCb detector. Their ratios of branching fractions with respect to the Λb 0→Λc +Ds - mode are measured to be (Formula presented.) where the first uncertainties are statistical, the second systematic, and the third, for the Λb 0→Λc +D¯(∗)0K- decays, are due to the uncertainties on the branching fractions of the Ds -→K-K+π- and D¯0→K+π- decay modes. The measured branching fractions probe factorization assumptions in effective theories and provide the normalization for future pentaquark searches in Λb 0→Λc +D¯(∗)0K- decay channels.

UR - https://www.scopus.com/pages/publications/85201023451

U2 - 10.1140/epjc/s10052-024-12752-3

DO - 10.1140/epjc/s10052-024-12752-3

M3 - Artículo

AN - SCOPUS:85201023451

SN - 1434-6044

VL - 84

JO - European Physical Journal C

JF - European Physical Journal C

IS - 6

M1 - 575