https://doi.org/10.1051/epjconf/202430305007
Study of axion-like particles constraints from 3-photon events at e+e− colliders
Institut für Kernphysik and PRISMA+ Cluster of Excellence, Johannes Gutenberg Universität, D-55099 Mainz, Germany
* e-mail: apustynt@uni-mainz.de
** e-mail: vandma00@uni-mainz.de
Published online: 25 September 2024
Axions and axion-like particles (ALPs) are one of the most widely discussed extensions of the Standard Model when it comes to the strong CP problem and dark matter candidates. In this paper we investigate limits on ALP mass, and its couplings to photons and leptons from 3-photon annihilation at e+e− colliders. We apply them to the particular kinematics of the Belle II experiment, covering the ALP mass range from few hundred MeV to around 10 GeV. Our results, which improve upon previous analyses by also including the ALP coupling to electrons, show that such future analyses will allow to significantly extend the ALP search range and impose much more stringent restrictions on their couplings.
© The Authors, published by EDP Sciences, 2024
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.
