The Institute of High Energy Physics of the Chinese Academy of Sciences in Beijing operates am electron-positron collider called BEPC-II (Beijing electron-positron collider II). It is designed for center-of-mass energies between 2 and 5 GeV, which allows to study charmonium with very high statistics. The design luminosity is 10^33 cm^2 s^-1. Since 2009, measurements are performed at various collision energies using the BESIII (beijing Spectrometer III) detector.
The key research ares are:
- Spectroscopy of light hadrons
- Spectroscopy of charmonium
- Electroweak and strong interaction studies at the charm scale
- Tau-lepton physics
- Searches for physics beyond the Standard Model
Detailled information about the BESIII physics program can be found in the physics book (arXiv:0809.1869). Mainz researchers participate in BESIII in the framework of the collaborative research center 1044.