A photo of the status of the BESIII experiment

Abstract

— The Beijing Spectrometer III (BESIII) operates with the collisions provided by the Beijing Electron Positron Collider II (BEPCII), which is hosted at the Institute of High Energy Physics (IHEP) of Beijing, China. Since 2009, BESIII has collected the world’s largest sample of J/ψ, ψ(2S), and ψ(3770). In 2016 BEPCII has reached the design luminosity of 10 cm−2s−1, setting a world record for e+e− accelerators in this energy regime. Moreover, since BEPCII can provide collisions with center-of-mass energies between 2 and 4.6 GeV, BESIII has unique datasets to investigate the properties of the new exotic XY Z states, open charm decays, hadron spectroscopy and new physics searches, with no direct competitor in the τ -charm energy region. In this paper, an overview on the status of the BESIII experiment and of its more recent results is presented.