Improved Standard-Model predictions for η (′) → ℓ + ℓ −
Abstract The rare decays η (′) → ℓ + ℓ −, ℓ ∈ {e, μ}, are highly suppressed in the Standard Model, both by their chirality structure and the required loop attaching the lepton line to the η (′) → γ ∗ γ ∗ matrix element. The latter is described by a single scalar function, the transition form factor,...
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| Autors principals: | , , , , |
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| Format: | Artigo |
| Idioma: | Inglês |
| Publicat: |
SpringerOpen
2026-04-01
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| Col·lecció: | Journal of High Energy Physics |
| Matèries: | |
| Accés en línia: | https://doi.org/10.1007/JHEP04(2026)088 |
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