Revisiting $$\gamma ^*\rightarrow \gamma \pi ^0\eta $$ γ ∗ → γ π 0 η near the $$\phi (1020)$$ ϕ ( 1020 ) using analyticity and the left-cut structure
Abstract Amplitudes of the form $$\gamma ^*(q^2)\rightarrow \gamma P_1P_2$$ γ ∗ ( q 2 ) → γ P 1 P 2 appear as sub-processes in the computation of the muon $$g-2$$ g - 2 . We test a proposed theoretical modelling against very precise experimental measurements by the KLOE collaboration at $$q^2=m^2_\p...
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Format: | Article |
Language: | English |
Published: |
SpringerOpen
2021-11-01
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Series: | European Physical Journal C: Particles and Fields |
Online Access: | https://doi.org/10.1140/epjc/s10052-021-09772-8 |