Improved analysis of rare Z-boson decays into a heavy vector quarkonium plus lepton pair
We improve the theoretical predictions for rare Z-boson decays, Z→Vℓ+ℓ− (ℓ=e or μ), where V denotes a heavy vector quarkonium including J/Ψ, Ψ(2S), and Υ(nS) with n=1,2,3. These processes are thought to be dominated by the electromagnetic fragmentation transition, i.e., Z→γ*ℓ+ℓ− followed by γ* → V....
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| Hauptverfasser: | , |
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| Format: | Artigo |
| Sprache: | Inglês |
| Veröffentlicht: |
Elsevier
2026-04-01
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| Schriftenreihe: | Nuclear Physics B |
| Schlagworte: | |
| Online-Zugang: | http://www.sciencedirect.com/science/article/pii/S055032132600091X |
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