Correlations of C and CP violation in η → π 0 ℓ + ℓ − and η ′ → ηℓ + ℓ

Abstract 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 → π 0 ℓ + ℓ − and η ′ → ηℓ + ℓ − . Focusing on long-distance contributions driven by the lowest-lying hadronic intermediate states, we work out...

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Bibliographic Details
Published in:The journal of high energy physics 2024-03, Vol.2024 (3), p.1-34
Main Authors: Hakan Akdag, Bastian Kubis, Andreas Wirzba
Format: Article
Language:English
Subjects:
Chiral Lagrangian
CP Violation
Discrete Symmetries
Effective Field Theories of QCD
Online Access:Get full text
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Summary:Abstract 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 → π 0 ℓ + 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 → π 0 π + π − and η ′ → ηπ + π − , using dispersion theory.
ISSN:1029-8479
DOI:10.1007/JHEP03(2024)059