| Issue |
EPJ Web Conf.
Volume 291, 2024
MESON 2023 – 17th International Workshop on Meson Physics
|
|
|---|---|---|
| Article Number | 03002 | |
| Number of page(s) | 4 | |
| Section | Heavy Flavours | |
| DOI | https://doi.org/10.1051/epjconf/202429103002 | |
| Published online | 16 February 2024 | |
https://doi.org/10.1051/epjconf/202429103002
Observation of e+e− → χc1 at BESIII
Institut für Kernphysik, Johannes Gutenberg-Universität Mainz
Published online: 16 February 2024
Abstract. In electron-positron annihilation, the process of e+e− → χc1 can occur via the production of two virtual photons or through neutral current, therefore being suppressed with respect to the normal annihilation process via one virtual photon. Using a dedicated scan sample around the χc1 mass, the direct production of χc1 has been established for the first time in experiments. This provides a new approach for the study of the internal nature of hadrons.
© The Authors, published by EDP Sciences, 2024
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