Study of charmonium and charmonium-like contributions in B+ → J/ψηK+ decays

The LHCb collaboration

doi:10.1007/JHEP04(2022)046

Study of charmonium and charmonium-like contributions in B⁺ → J/ψηK⁺ decays

The 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
Institute of Physics
ENAC-IIC-GEL
Centro Brasileiro de Pesquisas Fisicas
University of Florence
Imperial College London

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

11 Citations (Scopus)

Abstract

A study of B⁺→ J/ψηK⁺ decays, followed by J/ψ → μ⁺μ⁻ and η → γγ, is performed using a dataset collected with the LHCb detector in proton-proton collisions at centre-of-mass energies of 7, 8 and 13 TeV, corresponding to an integrated luminosity of 9 fb⁻¹. The J/ψη mass spectrum is investigated for contributions from charmonia and charmonium-like states. Evidence is found for the B⁺→ (ψ₂(3823) → J/ψη)K⁺ and B⁺→ (ψ(4040) → J/ψη)K⁺ decays with significance of 3.4 and 4.7 standard deviations, respectively. This constitutes the first evidence for the ψ₂(3823) → J/ψη decay. [Figure not available: see fulltext.]

Original language	English
Article number	46
Journal	Journal of High Energy Physics
Volume	2022
Issue number	4
DOIs	https://doi.org/10.1007/JHEP04(2022)046
Publication status	Published - 1 Apr 2022

Keywords

B Physics
Branching fraction
Hadron-Hadron Scattering
Quarkonium

Access to Document

10.1007/JHEP04(2022)046

Cite this

@article{845f283ed094453fa1d6d049a037373f,

title = "Study of charmonium and charmonium-like contributions in B+ → J/ψηK+ decays",

abstract = "A study of B+→ J/ψηK+ decays, followed by J/ψ → μ+μ− and η → γγ, is performed using a dataset collected with the LHCb detector in proton-proton collisions at centre-of-mass energies of 7, 8 and 13 TeV, corresponding to an integrated luminosity of 9 fb−1. The J/ψη mass spectrum is investigated for contributions from charmonia and charmonium-like states. Evidence is found for the B+→ (ψ2(3823) → J/ψη)K+ and B+→ (ψ(4040) → J/ψη)K+ decays with significance of 3.4 and 4.7 standard deviations, respectively. This constitutes the first evidence for the ψ2(3823) → J/ψη decay. [Figure not available: see fulltext.]",

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

author = "\{The LHCb collaboration\} and R. Aaij and Abdelmotteleb, \{A. S.W.\} and \{Abell{\'a}n Beteta\}, C. and F. Abudin{\'e}n 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 M. Andersson 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 de Souza Leite\}, J. and M. Barbetti and Barlow, \{R. J.\} and S. Barsuk and W. Barter and F. Fleuret and E. Maurice and Niel, \{E. M.\}",

note = "Publisher Copyright: {\textcopyright} 2022, The Author(s).",

year = "2022",

month = apr,

day = "1",

doi = "10.1007/JHEP04(2022)046",

language = "English",

volume = "2022",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

publisher = "Springer Verlag",

number = "4",

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TY - JOUR

T1 - Study of charmonium and charmonium-like contributions in B+ → J/ψηK+ decays

AU - The LHCb collaboration

AU - Aaij, R.

AU - Abdelmotteleb, A. S.W.

AU - Abellán Beteta, C.

AU - Abudinén, F.

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 - Andersson, M.

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 de Souza Leite, J.

AU - Barbetti, M.

AU - Barlow, R. J.

AU - Barsuk, S.

AU - Barter, W.

AU - Fleuret, F.

AU - Maurice, E.

AU - Niel, E. M.

PY - 2022/4/1

Y1 - 2022/4/1

N2 - A study of B+→ J/ψηK+ decays, followed by J/ψ → μ+μ− and η → γγ, is performed using a dataset collected with the LHCb detector in proton-proton collisions at centre-of-mass energies of 7, 8 and 13 TeV, corresponding to an integrated luminosity of 9 fb−1. The J/ψη mass spectrum is investigated for contributions from charmonia and charmonium-like states. Evidence is found for the B+→ (ψ2(3823) → J/ψη)K+ and B+→ (ψ(4040) → J/ψη)K+ decays with significance of 3.4 and 4.7 standard deviations, respectively. This constitutes the first evidence for the ψ2(3823) → J/ψη decay. [Figure not available: see fulltext.]

AB - A study of B+→ J/ψηK+ decays, followed by J/ψ → μ+μ− and η → γγ, is performed using a dataset collected with the LHCb detector in proton-proton collisions at centre-of-mass energies of 7, 8 and 13 TeV, corresponding to an integrated luminosity of 9 fb−1. The J/ψη mass spectrum is investigated for contributions from charmonia and charmonium-like states. Evidence is found for the B+→ (ψ2(3823) → J/ψη)K+ and B+→ (ψ(4040) → J/ψη)K+ decays with significance of 3.4 and 4.7 standard deviations, respectively. This constitutes the first evidence for the ψ2(3823) → J/ψη decay. [Figure not available: see fulltext.]

KW - B Physics

KW - Branching fraction

KW - Hadron-Hadron Scattering

KW - Quarkonium

U2 - 10.1007/JHEP04(2022)046

DO - 10.1007/JHEP04(2022)046

M3 - Article

AN - SCOPUS:85134072648

SN - 1126-6708

VL - 2022

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 4

M1 - 46