Speaker
Mr
Thomas Lenz
(Institut für Kernphysik, JGU Mainz)
Description
Transition form factors of light pseudoscalar mesons play an important role in the calculations of hadronic contributions to the anomalous magnetic moment of the muon. The BESIII experiment at the $e^+ \, e^-$ collider BEPCII in Beijing has collected $9.0 \, \mathrm{fb}^{-1}$ of data at energies above $3.773 \, \mathrm{GeV}$. Based on these data the process $e^+ \, e^- \rightarrow \pi^0 \, \gamma$ is studied. The analysis aims at the determination of the transition form factor of the $\pi^0$ in a region of momentum transfer above $14 \, \mathrm{GeV}^2$ which will also to shed light on the discrepancy between BABAR and BELLE. We will give an overview of the current status of the analysis.
Primary author
Mr
Thomas Lenz
(Institut für Kernphysik, JGU Mainz)
Co-authors
Dr
Christoph Florian Redmer
(Institute for Nuclear Physics, Johannes Gutenberg-University Mainz)
Mr
Denig Achim
(JGU Mainz)
