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

LHCb collaboration

doi:10.1007/JHEP04(2022)046

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

LHCb collaboration

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

Abstract

A study of B+ -> J/psi eta K+ decays, followed by J/psi -> mu(+)mu(-) and eta -> 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+ -> (psi(2)(3823) -> J/psi eta)K+ and B+ -> (psi(4040) -> J/psi eta)K+ decays with significance of 3.4 and 4.7 standard deviations, respectively. This constitutes the first evidence for the psi(2)(3823) -> J/psi eta decay.

Original language	English
Article number	046
Number of pages	29
Journal	Journal of High Energy Physics
Volume	2022
Issue number	4
DOIs	https://doi.org/10.1007/JHEP04(2022)046
Publication status	Published - 8 Apr 2022

Keywords

B Physics
Branching fraction
Hadron-Hadron Scattering
Quarkonium
X(3872)

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10.1007/JHEP04(2022)046Licence: CC BY

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@article{95f59248c27d4b16a6fac3b0cf8a02c3,

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

abstract = "A study of B+ -> J/psi eta K+ decays, followed by J/psi -> mu(+)mu(-) and eta -> 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+ -> (psi(2)(3823) -> J/psi eta)K+ and B+ -> (psi(4040) -> J/psi eta)K+ decays with significance of 3.4 and 4.7 standard deviations, respectively. This constitutes the first evidence for the psi(2)(3823) -> J/psi eta decay.",

keywords = "B Physics, Branching fraction, Hadron-Hadron Scattering, Quarkonium, X(3872)",

author = "R. Aaij and A.S.W. Abdelmotteleb and C.A. Beteta and F. Abudinen and T. Ackernley and B. Adeva and M. Adinolfi and H. Afsharnia and C. Agapopoulou and C.A. Aidala and S. Aiola and Z. Ajaltouni and S. Akar and J. Albrecht and F. Alessio and M. Alexander and A.A. Albero and Z. Aliouche and G. Alkhazov and P.A. Cartelle and S. Amato and J.L. Amey 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 J.J. Back and P.B. Rodriguez and V. Balagura and W. Baldini and J.B.D. Leite and M. Barbetti and R.J. Barlow and S. Barsuk and \{LHCb collaboration\} and \{de Vries\}, J.A. and M. Merk and C.J. Pawley and K. Vos",

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

year = "2022",

month = apr,

day = "8",

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

language = "English",

volume = "2022",

journal = "Journal of High Energy Physics",

issn = "1029-8479",

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 - Aaij, R.

AU - Abdelmotteleb, A.S.W.

AU - Beteta, C.A.

AU - Abudinen, 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 - Albero, A.A.

AU - Aliouche, Z.

AU - Alkhazov, G.

AU - Cartelle, P.A.

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 - Rodriguez, P.B.

AU - Balagura, V.

AU - Baldini, W.

AU - Leite, J.B.D.

AU - Barbetti, M.

AU - Barlow, R.J.

AU - Barsuk, S.

AU - LHCb collaboration

AU - de Vries, J.A.

AU - Merk, M.

AU - Pawley, C.J.

AU - Vos, K.

PY - 2022/4/8

Y1 - 2022/4/8

N2 - A study of B+ -> J/psi eta K+ decays, followed by J/psi -> mu(+)mu(-) and eta -> 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+ -> (psi(2)(3823) -> J/psi eta)K+ and B+ -> (psi(4040) -> J/psi eta)K+ decays with significance of 3.4 and 4.7 standard deviations, respectively. This constitutes the first evidence for the psi(2)(3823) -> J/psi eta decay.

AB - A study of B+ -> J/psi eta K+ decays, followed by J/psi -> mu(+)mu(-) and eta -> 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+ -> (psi(2)(3823) -> J/psi eta)K+ and B+ -> (psi(4040) -> J/psi eta)K+ decays with significance of 3.4 and 4.7 standard deviations, respectively. This constitutes the first evidence for the psi(2)(3823) -> J/psi eta decay.

KW - B Physics

KW - Branching fraction

KW - Hadron-Hadron Scattering

KW - Quarkonium

KW - X(3872)

U2 - 10.1007/JHEP04(2022)046

DO - 10.1007/JHEP04(2022)046

M3 - Article

SN - 1029-8479

VL - 2022

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 4

M1 - 046

ER -

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

Abstract

Keywords

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