Correlations of C and CP violation in η → π⁰ℓ⁺ℓ⁻ and η^′ → ηℓ⁺ℓ⁻

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2024年3月12日

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Hakan Akdag,
Bastian Kubis,
Andreas Wirzba

摘要

Based on recent progress in the systematic analysis of C and CP violation in the light-meson sector, we calculate the C-odd transition amplitudes η → π⁰ℓ⁺ℓ⁻ and η^′ → ηℓ⁺ℓ⁻. Focusing on long-distance contributions driven by the lowest-lying hadronic intermediate states, we work out the correlations between these beyond-the-Standard-Model signals and the Dalitz-plot asymmetries in η → π⁰π⁺π⁻ and η^′ → ηπ⁺π⁻, using dispersion theory.

Correlations of C and CP violation in η → π0ℓ+ℓ− and η′ → ηℓ+ℓ−

摘要

Correlations of C and CP violation in η → π⁰ℓ⁺ℓ⁻ and η^′ → ηℓ⁺ℓ⁻