Study of Bc+→χcπ+ decays

The LHCb collaboration

doi:10.1007/JHEP02(2024)173

Study of Bc+→χcπ+ decays

The LHCb collaboration

National Institute for Subatomic Physics
University of Warwick
University of Zurich
University of Liverpool
Syracuse University
Instituto Galego de Física de Altas Enerxías (IGFAE)
University of Bristol
Uppsala University
CERN
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
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
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
Centro Brasileiro de Pesquisas Físicas
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
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
University of Maryland, College Park
National Centre for Nuclear Research
Universidade de Brasília
University of Pisa
University of Valencia
Universidad Nacional de Colombia
University of Birmingham
NASU - Kharkov Institute of Physics and Technology
Vrije Universiteit Amsterdam
AGH University of Krakow
Lanzhou University
Henan University
Excellence Cluster ORIGINS
University of Bergamo
Departement de Physique Nucleaire (SPhN)
University of Basilicata
Max Planck Institute for Nuclear Physics
University of Siena
University of Alcalá
University of Urbino

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

A study of B_c⁺→χ_cπ⁺ decays is reported using proton-proton collision data, collected with the LHCb detector at centre-of-mass energies of 7, 8, and 13 TeV, corresponding to an integrated luminosity of 9 fb⁻¹. The decay B_c⁺→χ_c2π⁺ is observed for the first time, with a significance exceeding seven standard deviations. The relative branching fraction with respect to the B_c⁺→J/ψπ⁺ decay is measured to be (Formula presented.) where the first uncertainty is statistical, the second is systematic, and the third is due to the knowledge of the χ_c2→ J/ψγ branching fraction. No significant B_c⁺→χ_c1π⁺ signal is observed and an upper limit for the relative branching fraction for the B_c⁺→χ_c1π⁺ and B_c⁺→χ_c2π⁺ decays of (Formula presented.) is set at the 90% confidence level.

Original language	English
Article number	173
Journal	Journal of High Energy Physics
Volume	2024
Issue number	2
DOIs	https://doi.org/10.1007/JHEP02(2024)173
State	Published - Feb 2024
Externally published	Yes

Keywords

B Physics
Branching fraction
Hadron-Hadron Scattering

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10.1007/JHEP02(2024)173

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title = "Study of Bc+→χcπ+ decays",

abstract = "A study of Bc+→χcπ+ decays is reported using proton-proton collision data, collected with the LHCb detector at centre-of-mass energies of 7, 8, and 13 TeV, corresponding to an integrated luminosity of 9 fb−1. The decay Bc+→χc2π+ is observed for the first time, with a significance exceeding seven standard deviations. The relative branching fraction with respect to the Bc+→J/ψπ+ decay is measured to be (Formula presented.) where the first uncertainty is statistical, the second is systematic, and the third is due to the knowledge of the χc2→ J/ψγ branching fraction. No significant Bc+→χc1π+ signal is observed and an upper limit for the relative branching fraction for the Bc+→χc1π+ and Bc+→χc2π+ decays of (Formula presented.) is set at the 90\% confidence level.",

keywords = "B Physics, Branching fraction, Hadron-Hadron Scattering",

author = "\{The LHCb collaboration\} and R. Aaij and Abdelmotteleb, \{A. S.W.\} and \{Abellan Beteta\}, C. and F. Abudin{\'e}n and T. Ackernley and Adefisoye, \{A. A.\} 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 \{Castro Godinez\}, J.",

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

year = "2024",

month = feb,

doi = "10.1007/JHEP02(2024)173",

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

volume = "2024",

journal = "Journal of High Energy Physics",

issn = "1029-8479",

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AU - The LHCb collaboration

AU - Aaij, R.

AU - Abdelmotteleb, A. S.W.

AU - Abellan Beteta, C.

AU - Abudinén, F.

AU - Ackernley, T.

AU - Adefisoye, A. A.

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 - Castro Godinez, J.

PY - 2024/2

Y1 - 2024/2

N2 - A study of Bc+→χcπ+ decays is reported using proton-proton collision data, collected with the LHCb detector at centre-of-mass energies of 7, 8, and 13 TeV, corresponding to an integrated luminosity of 9 fb−1. The decay Bc+→χc2π+ is observed for the first time, with a significance exceeding seven standard deviations. The relative branching fraction with respect to the Bc+→J/ψπ+ decay is measured to be (Formula presented.) where the first uncertainty is statistical, the second is systematic, and the third is due to the knowledge of the χc2→ J/ψγ branching fraction. No significant Bc+→χc1π+ signal is observed and an upper limit for the relative branching fraction for the Bc+→χc1π+ and Bc+→χc2π+ decays of (Formula presented.) is set at the 90% confidence level.

AB - A study of Bc+→χcπ+ decays is reported using proton-proton collision data, collected with the LHCb detector at centre-of-mass energies of 7, 8, and 13 TeV, corresponding to an integrated luminosity of 9 fb−1. The decay Bc+→χc2π+ is observed for the first time, with a significance exceeding seven standard deviations. The relative branching fraction with respect to the Bc+→J/ψπ+ decay is measured to be (Formula presented.) where the first uncertainty is statistical, the second is systematic, and the third is due to the knowledge of the χc2→ J/ψγ branching fraction. No significant Bc+→χc1π+ signal is observed and an upper limit for the relative branching fraction for the Bc+→χc1π+ and Bc+→χc2π+ decays of (Formula presented.) is set at the 90% confidence level.

KW - B Physics

KW - Branching fraction

KW - Hadron-Hadron Scattering

UR - https://www.scopus.com/pages/publications/85194763215

U2 - 10.1007/JHEP02(2024)173

DO - 10.1007/JHEP02(2024)173

M3 - Artículo

AN - SCOPUS:85194763215

SN - 1029-8479

VL - 2024

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 2

M1 - 173

ER -

Study of Bc+→χcπ+ decays

Abstract

Keywords

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