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Belle data on theπ0γ*γform factor: A game changer?

Agaev, S. S. ; Braun, V. M. ; Offen, N. ; Porkert, F. A.



Abstract

We extend our analysis [S. S. Agaev, V. M. Braun, N. Offen, and F. A. Porker, Phys. Rev. D 83, 054020 (2011)] of the pi(0)gamma*gamma form factor by including a comparison with the new Belle data [S. Uehara et al. (Belle Collaboration), arXiv:1205.3249]. The necessity of new precision measurements in a broad interval of momentum transfers is emphasized.


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