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Emphasizing the different trends of the existing data for the $\gamma^*\gamma \to \pi^0$ transition form factor

Authors :
Bakulev, A. P.
Mikhailov, S. V.
Pimikov, A. V.
Stefanis, N. G.
Publication Year :
2012

Abstract

The new data on the $\gamma^*\gamma \to \pi^0$ transition form factor of the Belle Collaboration are analyzed in comparison with those of BaBar (including the older data of CELLO and CLEO) using an approach based on light-cone sum rules. Performing a 2-, and a 3-parametric fit to these data, we found that the Belle and the BaBar data have no overlap at the $1\sigma$ level. While the Belle data agree with our predictions, the Babar data are in conflict with them.<br />Comment: 8 pages, 6 figures, Presented at Light-Cone 2012, July 08-13, 2012, Cracow, Poland

Details

Database :
arXiv
Publication Type :
Report
Accession number :
edsarx.1212.0644
Document Type :
Working Paper