Matches in SemOpenAlex for { <https://semopenalex.org/work/W4280497401> ?p ?o ?g. }
- W4280497401 abstract "We present a dispersive representation of the η' transition form factor that allows one to account, in a consistent way, for the effects of ρ - ω mixing in both the isoscalar and the isovector contributions. Using this formalism, we analyze recent data on η'→π+π-γ to constrain the isovector part of the form factor, individually and in combination with data for the pion vector form factor, which suggests a tension in the ρ - ω mixing parameter. As a first application, we use our results, in combination with the most recent input for the isoscalar part of the form factor, to predict the corresponding spectrum of η'→ℓ+ℓ-γ , in particular we find the slope parameter bη'=1.455(24)GeV-2 . With forthcoming data on the latter process, our results establish the necessary framework to improve the evaluation of the η' -pole contribution to the anomalous magnetic moment of the muon using experimental input from both η' decay channels." @default.
- W4280497401 created "2022-05-22" @default.
- W4280497401 creator A5057754049 @default.
- W4280497401 creator A5070452759 @default.
- W4280497401 creator A5075258585 @default.
- W4280497401 creator A5091328951 @default.
- W4280497401 date "2022-05-12" @default.
- W4280497401 modified "2023-09-26" @default.
- W4280497401 title "A dispersive analysis of $$varvec{eta 'rightarrow pi ^+pi ^-gamma }$$ and $$varvec{eta 'rightarrow ell ^+ell ^-gamma }$$" @default.
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- W4280497401 doi "https://doi.org/10.1140/epjc/s10052-022-10247-7" @default.
- W4280497401 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/35578684" @default.
- W4280497401 hasPublicationYear "2022" @default.
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