Improved Standard-Model prediction for K L → ℓ + ℓ −
Abstract We present a comprehensive calculation of the K L → γ ∗ γ ∗ form factor in dispersion theory, using input from the leptonic decays K L → ℓ + ℓ − γ, $${K}_{L}\to {{\ell}}_{1}^{+}{{\ell}}_{1}^{-}{{\ell}}_{2}^{+}{{\ell}}_{2}^{-}$$ , the hadronic mode K L → π + π − γ, the normalization K L → γγ...
Main Authors: | Martin Hoferichter, Bai-Long Hoid, Jacobo Ruiz de Elvira |
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Format: | Article |
Language: | English |
Published: |
SpringerOpen
2024-04-01
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Series: | Journal of High Energy Physics |
Subjects: | |
Online Access: | https://doi.org/10.1007/JHEP04(2024)071 |
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