Study of the rare decay J/ψ → μ+μ−μ+μ−

LHCb Collaboration; Marco Adinolfi; Jake Amey; Jozie Cottee Meldrum; Zahra Ghorbanimoghaddam; R. Lane; V. Lisovskyi; A. M. Marshall; Camille A Normand; Konstantinos A.  Petridis; Jonas H Rademacker; Jake Reich; Anatoly Solomin; Jaap J Velthuis; R. Wang; Benedict D C Westhenry; Zak Williams

doi:10.1007/JHEP12(2024)062

Study of the rare decay J/ψ → μ⁺μ⁻μ⁺μ⁻

LHCb Collaboration, Marco Adinolfi, Jake Amey, Jozie Cottee Meldrum, Zahra Ghorbanimoghaddam, R. Lane, V. Lisovskyi, A. M. Marshall, Camille A Normand, Konstantinos A. Petridis, Jonas H Rademacker, Jake Reich, Anatoly Solomin, Jaap J Velthuis, R. Wang, Benedict D C Westhenry, Zak Williams

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

Abstract

The rare electromagnetic J/ψ → μ+μ−μ+μ− decay is observed with a significance greatly exceeding the discovery threshold, using proton-proton collision data collected by the LHCb experiment during 2016–2018 at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.4 fb−1. The rate of this decay is measured relative to that of the J/ψ → μ+μ− mode. Using the QED model for the four-muon decay in the efficiency estimation, its branching fraction is determined to be

Β(J/ψ → μ⁺μ⁻μ⁺μ⁻) = (1.13±0.10±0.05±0.01) x 10^-6,

where the uncertainties are statistical, systematic and due to the uncertainty on the branching fraction of the J/ψ → μ+μ− decay.

Original language	English
Article number	62
Number of pages	25
Journal	Journal of High Energy Physics
Volume	62
DOIs	https://doi.org/10.1007/JHEP12(2024)062
Publication status	Published - 10 Dec 2024

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LHCb Collaboration, Adinolfi, M., Amey, J., Cottee Meldrum, J., Ghorbanimoghaddam, Z., Lane, R., Lisovskyi, V., Marshall, A. M., Normand, C. A., Petridis, K. A., Rademacker, J. H., Reich, J., Solomin, A., Velthuis, J. J., Wang, R., Westhenry, B. D. C., & Williams, Z. (2024). Study of the rare decay J/ψ → μ⁺μ⁻μ⁺μ⁻. Journal of High Energy Physics, 62, Article 62. https://doi.org/10.1007/JHEP12(2024)062

@article{12327db8cf73408f92fb1b89bf778da4,

title = "Study of the rare decay J/ψ → μ+μ−μ+μ−",

abstract = "The rare electromagnetic J/ψ → μ+μ−μ+μ− decay is observed with a significance greatly exceeding the discovery threshold, using proton-proton collision data collected by the LHCb experiment during 2016–2018 at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.4 fb−1. The rate of this decay is measured relative to that of the J/ψ → μ+μ− mode. Using the QED model for the four-muon decay in the efficiency estimation, its branching fraction is determined to beΒ(J/ψ → μ+μ−μ+μ−) = (1.13±0.10±0.05±0.01) x 10-6,where the uncertainties are statistical, systematic and due to the uncertainty on the branching fraction of the J/ψ → μ+μ− decay.",

author = "{LHCb Collaboration} and Marco Adinolfi and Jake Amey and {Cottee Meldrum}, Jozie and Zahra Ghorbanimoghaddam and R. Lane and V. Lisovskyi and Marshall, {A. M.} and Normand, {Camille A} and Petridis, {Konstantinos A.} and Rademacker, {Jonas H} and Jake Reich and Anatoly Solomin and Velthuis, {Jaap J} and R. Wang and Westhenry, {Benedict D C} and Zak Williams",

year = "2024",

month = dec,

day = "10",

doi = "10.1007/JHEP12(2024)062",

language = "English",

volume = "62",

journal = "Journal of High Energy Physics",

issn = "1029-8479",

publisher = "Springer Verlag",

}

LHCb Collaboration, Adinolfi, M , Amey, J , Cottee Meldrum, J , Ghorbanimoghaddam, Z, Lane, R, Lisovskyi, V, Marshall, AM, Normand, CA , Petridis, KA , Rademacker, JH , Reich, J , Solomin, A , Velthuis, JJ, Wang, R, Westhenry, BDC & Williams, Z 2024, 'Study of the rare decay J/ψ → μ⁺μ⁻μ⁺μ⁻', Journal of High Energy Physics, vol. 62, 62. https://doi.org/10.1007/JHEP12(2024)062

TY - JOUR

T1 - Study of the rare decay J/ψ → μ+μ−μ+μ−

AU - LHCb Collaboration

AU - Adinolfi, Marco

AU - Amey, Jake

AU - Cottee Meldrum, Jozie

AU - Ghorbanimoghaddam, Zahra

AU - Lane, R.

AU - Lisovskyi, V.

AU - Marshall, A. M.

AU - Normand, Camille A

AU - Petridis, Konstantinos A.

AU - Rademacker, Jonas H

AU - Reich, Jake

AU - Solomin, Anatoly

AU - Velthuis, Jaap J

AU - Wang, R.

AU - Westhenry, Benedict D C

AU - Williams, Zak

PY - 2024/12/10

Y1 - 2024/12/10

N2 - The rare electromagnetic J/ψ → μ+μ−μ+μ− decay is observed with a significance greatly exceeding the discovery threshold, using proton-proton collision data collected by the LHCb experiment during 2016–2018 at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.4 fb−1. The rate of this decay is measured relative to that of the J/ψ → μ+μ− mode. Using the QED model for the four-muon decay in the efficiency estimation, its branching fraction is determined to beΒ(J/ψ → μ+μ−μ+μ−) = (1.13±0.10±0.05±0.01) x 10-6,where the uncertainties are statistical, systematic and due to the uncertainty on the branching fraction of the J/ψ → μ+μ− decay.

AB - The rare electromagnetic J/ψ → μ+μ−μ+μ− decay is observed with a significance greatly exceeding the discovery threshold, using proton-proton collision data collected by the LHCb experiment during 2016–2018 at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.4 fb−1. The rate of this decay is measured relative to that of the J/ψ → μ+μ− mode. Using the QED model for the four-muon decay in the efficiency estimation, its branching fraction is determined to beΒ(J/ψ → μ+μ−μ+μ−) = (1.13±0.10±0.05±0.01) x 10-6,where the uncertainties are statistical, systematic and due to the uncertainty on the branching fraction of the J/ψ → μ+μ− decay.

U2 - 10.1007/JHEP12(2024)062

DO - 10.1007/JHEP12(2024)062

M3 - Article (Academic Journal)

SN - 1029-8479

VL - 62

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

M1 - 62

ER -