Study of the rare decay J/ψ → μ+μ−μ+μ−
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. T...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Körperschaft: | |
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
December 10, 2024
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| In: |
Journal of high energy physics
Year: 2024, Heft: 12, Pages: 1-24 |
| ISSN: | 1029-8479 |
| DOI: | 10.1007/JHEP12(2024)062 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1007/JHEP12(2024)062 Verlag, kostenfrei, Volltext: https://link.springer.com/article/10.1007/JHEP12(2024)062 |
| Verfasserangaben: | The LHCb collaboration |
MARC
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| 245 | 1 | 0 | |a Study of the rare decay J/ψ → μ+μ−μ+μ− |c The LHCb collaboration |
| 246 | 3 | 3 | |a Study of the rare decay iota/psi → mu plus mu minus mu plus mu minus |
| 264 | 1 | |c December 10, 2024 | |
| 300 | |b Illustrationen | ||
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| 500 | |a The LHCb collaboration: R. Aaij, S. Bachmann, L. Carus, R. Caspary, S. Celani, C. Cocha Toapaxi, M. De Cian, L. Dittmann, S. Esen, F.C. Glaser, P.A. Günther, X. Han, S. Hausmann-Menzemer, P. Herrero Gascon, J. Hu, J. Kubat, C. Langenbruch, B. Leverington, J. Marks, M.P. Morgenthaler, P.R. Pais, S.R. Roy, M. Ruiz Diaz, M. Schmelling, G. Tuci, L.H. Uecker, D.J. Unverzagt, U. Uwer, C. Wang, L. Witola, Y. Zhao, A. Zhelezov und weitere1088 | ||
| 500 | |a Im Titel sind die Zeichen "+" und "-" hochgestellt | ||
| 500 | |a Gesehen am 09.07.2025 | ||
| 520 | |a 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 beBJ/ψ→μ+μ−μ+μ−=1.13±0.10±0.05±0.01×10−6, where the uncertainties are statistical, systematic and due to the uncertainty on the branching fraction of the J/ψ → μ+μ− decay. | ||
| 650 | 4 | |a Decay Processes | |
| 650 | 4 | |a Experimental Nuclear Physics | |
| 650 | 4 | |a Experimental Particle Physics | |
| 650 | 4 | |a Flavour Physics | |
| 650 | 4 | |a Hadron-Hadron Scattering | |
| 650 | 4 | |a Nuclear and Particle Physics | |
| 650 | 4 | |a Nuclear Physics | |
| 650 | 4 | |a Particle Physics | |
| 650 | 4 | |a Quarkonium | |
| 650 | 4 | |a Rare Decay | |
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