EPJ Web Conf.
Volume 218, 2019The 11th International Workshop on e+e− Collisions from Phi to Psi (PhiPsi 2017)
|Number of page(s)||6|
|Section||γγ Physics and Transition form Factors|
|Published online||18 October 2019|
Measurement of transition form factors in two-photon collisions at BESIII
Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, Johann-Joachim-Becher Weg 45, 55128 Mainz, Germany
* e-mail: firstname.lastname@example.org
Published online: 18 October 2019
The two-photon physics program of the BESIII Collaboration is mainly motivated by the need of new measurements of transition form factors as input for the Standard Model calculations of , the hadronic light-by-light scattering contribution to the anomalous magentic moment of the muon. The large data sets acquired at BESIII allow to study the transition form factors of pseudoscalar mesons in the relevant region of momentum transfer for . In this presentation the status of the respective measurements for π0,η and η’ mesons are discussed, and prospects for studies of multi-meson systems as well as of doubly-virtual transition form factors are given.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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