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- W43264355 abstract "We consider the contributions of the $C$-odd axial-vector resonances (${b}_{1}$, ${h}_{1}$) to $ensuremath{eta}ensuremath{rightarrow}{ensuremath{pi}}^{0}ensuremath{gamma}ensuremath{gamma}$, as well as those of the usual $C$-odd vector resonances ($ensuremath{rho}$, $ensuremath{omega}$) and chiral loops. Inclusion of ${b}_{1}(1235)$, ${h}_{1}(1170)$, ${h}_{1}(1380)$ increases the decay width of $ensuremath{eta}ensuremath{rightarrow}{ensuremath{pi}}^{0}ensuremath{gamma}ensuremath{gamma}$, improving the theoretical prediction. The measurement of the $ensuremath{gamma}ensuremath{gamma}$ spectrum can test our model. We also discuss the effects of these $C$-odd axial-vector resonances on electromagnetic interactions of neutral pions: $ensuremath{gamma}ensuremath{gamma}ensuremath{rightarrow}{ensuremath{pi}}^{0}{ensuremath{pi}}^{0}$ and electric and magnetic polarizabilities of ${ensuremath{pi}}^{0}$." @default.
- W43264355 created "2016-06-24" @default.
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- W43264355 date "1993-05-01" @default.
- W43264355 modified "2023-09-23" @default.
- W43264355 title "Contributions of the<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mi>C</mml:mi></mml:math>-odd axial-vector resonances to<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mi>η</mml:mi><mml:mo>→</mml:mo><mml:mrow><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mi>γ</mml:mi><mml:mi>γ</mml:mi></mml:math>and<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display…" @default.
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- W43264355 doi "https://doi.org/10.1103/physrevd.47.3933" @default.
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