Emphasizing the different trends of the existing data for the $\gamma^*\gamma \to \pi^0$ transition form factor
High Energy Physics - Phenomenology
2012-12-06 v2 High Energy Physics - Experiment
High Energy Physics - Lattice
Abstract
The new data on the 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 level. While the Belle data agree with our predictions, the Babar data are in conflict with them.
Keywords
Cite
@article{arxiv.1212.0644,
title = {Emphasizing the different trends of the existing data for the $\gamma^*\gamma \to \pi^0$ transition form factor},
author = {A. P. Bakulev and S. V. Mikhailov and A. V. Pimikov and N. G. Stefanis},
journal= {arXiv preprint arXiv:1212.0644},
year = {2012}
}
Comments
8 pages, 6 figures, Presented at Light-Cone 2012, July 08-13, 2012, Cracow, Poland