Study of charmonium and charmonium-like contributions in B<sup>+</sup> → J/ψηK<sup>+</sup> decays
Authors
Aaij, R
Abdelmotteleb, ASW
Abellán Beteta, C
Abudinén, F
Ackernley, T
Adeva, B
Adinolfi, M
Afsharnia, H
Agapopoulou, C
Aidala, CA
Aiola, S
Ajaltouni, Z
Akar, S
Albrecht, J
Alessio, F
Alexander, M
Alfonso Albero, A
Aliouche, Z
Alkhazov, G
Alvarez Cartelle, P
Amato, S
Amey, JL
Amhis, Y
An, L
Anderlini, L
Andersson, M
Andreianov, A
Andreotti, M
Ao, D
Archilli, F
Artamonov, A
Artuso, M
Arzymatov, K
Aslanides, E
Atzeni, M
Audurier, B
Bachmann, S
Bachmayer, M
Back, JJ
Baladron Rodriguez, P
Balagura, V
Baldini, W
Baptista de Souza Leite, J
Barbetti, M
Barlow, RJ
Barsuk, S
Barter, W
Bartolini, M
Baryshnikov, F
Basels, JM
Bassi, G
Batsukh, B
Battig, A
Bay, A
Beck, A
Becker, M
Bedeschi, F
Bediaga, I
Beiter, A
Belavin, V
Belin, S
Bellee, V
Belous, K
Belov, I
Belyaev, I
Bencivenni, G
Ben-Haim, E
Berezhnoy, A
Bernet, R
Berninghoff, D
Bernstein, HC
Bertella, C
Bertolin, A
Betancourt, C
Betti, F
Bezshyiko, I
Bhasin, S
Bhom, J
Bian, L
Bieker, MS
Biesuz, NV
Bifani, S
Billoir, P
Biolchini, A
Birch, M
Bishop, FCR
Bitadze, A
Bizzeti, A
Bjørn, M
Blago, MP
Blake, T
Blanc, F
Blusk, S
Bobulska, D
Boelhauve, JA
Boente Garcia, O
Boettcher, T
Boiarkina, O
Boldyrev, A
Bondar, A
Publication Date
2022Journal Title
Journal of High Energy Physics
ISSN
1029-8479
Publisher
Springer Science and Business Media LLC
Volume
2022
Issue
4
Language
en
Type
Article
This Version
VoR
Metadata
Show full item recordCitation
Aaij, R., Abdelmotteleb, A., Abellán Beteta, C., Abudinén, F., Ackernley, T., Adeva, B., Adinolfi, M., et al. (2022). Study of charmonium and charmonium-like contributions in B<sup>+</sup> → J/ψηK<sup>+</sup> decays. Journal of High Energy Physics, 2022 (4) https://doi.org/10.1007/JHEP04(2022)046
Abstract
A study of $B^+ \rightarrow J/\psi \eta K^+$ decays, followed by $J/\psi
\rightarrow \mu^+ \mu^-$ and $\eta \rightarrow \gamma \gamma$, 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 $J/\psi\eta$ mass spectrum is investigated for
contributions from charmonia and charmonium-like states. Evidence is found for
the $B^+\rightarrow \left( \psi_2(3823) \rightarrow J/\psi \eta \right) K^+$
and $B^+\rightarrow \left( \psi(4040) \rightarrow J/\psi \eta \right) K^+$
decays with significance of 3.4 and 4.7~standard deviations, respectively. This
constitutes the~first~evidence for the $\psi_2(3823) \rightarrow J/\psi \eta$
decay.
Keywords
Regular Article - Experimental Physics, B Physics, Branching fraction, Hadron-Hadron Scattering, Quarkonium
Identifiers
jhep04(2022)046, 18153
External DOI: https://doi.org/10.1007/JHEP04(2022)046
This record's URL: https://www.repository.cam.ac.uk/handle/1810/336056
Rights
Licence:
http://creativecommons.org/licenses/by/4.0/
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