BELLE Data on the $\pi^0 \gamma* \gamma$ Form Factor: A Game Changer?

TL;DR

This paper analyzes the $b0 ext{pi}^0b0 ext{gamma}^* ext{gamma}$ form factor by comparing theoretical models with new BELLE experimental data, highlighting the need for further precise measurements across various momentum transfers.

Contribution

It provides an updated analysis of the $b0 ext{pi}^0b0 ext{gamma}^* ext{gamma}$ form factor incorporating recent BELLE data, emphasizing the importance of future precision experiments.

Findings

Comparison with BELLE data reveals discrepancies with existing models.

Highlights the need for new measurements over a broad momentum transfer range.

Suggests potential revisions to theoretical understanding of the form factor.

Abstract

We extend our analysis of the $\pi^0\gamma^*\gamma$ form factor by including a comparison with the new BELLE data. The necessity of new precision measurements in a broad interval of momentum transfers is emphasized.